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Screw Type vs Spring Clamp PLC Terminal Blocks

Allen Bradley 1492 Terminal Block

Terminal blocks offer flexible and clean wiring for the system with several components such as PLCs, Input/ output devices, etc. These blocks come with a closed frame with the sole purpose of connecting two or more wires.  

This article discusses the specifications of Allen Bradley’s Bulletin 1492 of terminal blocks, which will enable you to choose terminal blocks according to your system requirements. Allen Bradley offers a wide range of terminal blocks, but this article will only focus on Bulletin 1492-J screw-type, 1492-W screw-type, and Bulletin 1492-L spring clamp IEC terminal blocks. 

Screw-type PLC Terminal Blocks 

In the screw terminal connection, the screw is used to hold the electrical wires. This terminal offers easy connection and removal of wires.

Allen Bradley offers a vast range of IEC screw-type terminal blocks with finger-safe housing and self-locking clamp design. We will discuss some important features such as application, voltage ratings, current ratings, temperatures, wire size, etc., which will help you select the terminal blocks for your applications.

A) Thermocouple Screw-type Terminal Blocks 

These two-circuit blocks have current bars made of thermocouple material. They have zinc chromate steel screws, and tin-plated terminals and are temperature/heat sensitive. They are recommended for process control systems to prevent additional EMF voltage at terminal block connections.

Thermocouple Screw-type Terminal Blocks

SpecificationsIECATEX
Wire Range30 AWG – 12 AWG30 AWG – 12 AWG
Voltage Rating55 Volts AC/DC
Dimensions 
(Width x Length x Height)
0.40 inches x 2.36 inches x 1.69 inches0.40 inches x 2.36 inches x 1.69 inches
Wire Strip Length10 millimeters10 millimeters
Housing Temperature Range– 50 to +120 degrees Celsius– 50 to +120 degrees Celsius
Recommended Tightening Torque0.4 to  0.6 Newton-meter0.4 to  0.6 Newton-meter

B) Feed-through Screw-type Terminal Blocks

Allen Bradley offers a wide range of feedthrough terminal blocks such as stab-connect, standard, and space-saver (compact) feedthrough blocks for single-circuit feedthrough applications. This family also offers specialty feedthrough blocks with test plugs and adapters to identify the voltage presence and perform a simple diagnostic.

Feed-through Terminal Blocks Specifications 

CategorySub-CategoryIEC Specifications (Voltage Rating, Maximum Current, Wire Range, Wire Strip Length, Recommended Tightening Torque, Housing Temperature Range)
Standard Feedthrough BlocksOne-Circuit Feedthrough blocks800 Volts AC/DC, 24 to 41 Amperes,  2.5 – 6mm², 10 to 12 millimeters, 0.5 to 1.6 Newton-meter, – 50 to +120 degrees Celsius
Standard Feedthrough BlocksOne-Circuit Feedthrough blocks1000 Volts AC/DC, 57 to 269 Amperes,  10 – 120mm², 12 to 27 millimeters, 2.3 to 16 Newton-meter, – 50 to +120 degrees Celsius
Standard Feedthrough BlocksSingle-circuit, space-saver Feedthrough Blocks800 Volts AC/DC, 24 to 76 Amperes,  0.5 – 16mm², 9 to 13 millimeters, 0.6 to 2.1 Newton-meter, – 40 to +90 degrees Celsius
Stab-connect Feed through BlocksOne-circuit feedthrough block500 Volts AC/DC, 16 Amperes, 2.5mm², 10 millimeters, 0.5 to 0.8 Newton-meter, – 50 to +120 degrees Celsius
Stab-connect Feed through BlocksTwo-circuit feedthrough block400 Volts AC/DC, 16 Amperes, 2.5mm², 10 millimeters, 0.5 to 0.8 Newton-meter, – 50 to +120 degrees Celsius
Speciality Feedthrough BlocksOne-circuit feedthrough, each side with 2 Connection points800 Volts AC/DC, 17.5 Amperes, 1.5mm², 7 millimeters, 0.5 Newton-meter, – 50 to +120 degrees Celsius
Speciality Feedthrough BlocksOne-circuit feedthrough, each side with 2 Connection points500 Volts AC/DC, 32 Amperes, 0.4 to 4mm², 10 millimeters, 0.7 Newton-meter, – 50 to +120 degrees Celsius
Speciality Feedthrough BlocksOne-circuit feedthrough with three Connection points (2 on one side)800 Volts AC/DC, 17.5 Amperes /single-side (24A /twin-side), 2.5mm²/ single-side( 2.5mm²/ twin-side), 10 millimeters /single-side (7 millimeters/twin-side), 0.8 Newton-meter /single-side (0.5 N.m/twin-side), – 50 to +120 degrees Celsius
Speciality Feedthrough BlocksOne-circuit feedthrough with three Connection points (2 on one side)500 Volts AC/DC, 32 Amperes, 4mm², 10 millimeters, 0.7 Newton-meter, – 50 to +120 degrees Celsius
Speciality Feedthrough BlocksOne-circuit feedthrough with three Connection points (2 on one side)800 Volts AC/DC, 32 Amperes, 0.5 to 4mm², 10 millimeters, 0.6 Newton-meter, – 40 to +90 degrees Celsius
Speciality Feedthrough BlocksCircuit – break test or measurement plug capability500 Volts AC/DC, 6 Amperes, 0.5 to 4mm², 10 millimeters, 0.5 to 0.8 Newton-meter, – 50 to +120 degrees Celsius
Speciality Feedthrough BlocksMotor connection block 
cluster, having 3 feeds and ground
800 Volts AC/DC, 32 Amperes, #22…10 AWG (4mm²), 10 millimeters, 1.0 Newton-meter, – 50 to +120 degrees Celsius
Speciality Feedthrough BlocksSingle-circuit block, terminals on common side500 Volts AC/DC, 15 Amperes, 0.5 to 2.5mm², 10 millimeters, 0.6 Newton-meter, – 40 to +90 degrees Celsius

C) Grounding Screw-type Terminal Blocks

These blocks are used to ground a circuit/controller to the DIN Rail. This family offers a wide range of terminals with specifications as mentioned below. 

Grounding Screw-type Terminal Blocks Specifications

CategorySub-CategorySpecifications (Wire Range, Wire Strip Length, Recommended Tightening Torque, Housing Temperature Range)
One-Circuit Feed-Through Grounding BlocksStandard Feedthrough#24 AWG to #1/0 AWG, 10 to 27 millimeters, 1.6 to 10 Newton-meter, – 50 to +120 degrees Celsius
One-Circuit Feed-Through Grounding Blocks2 Connection points on each side#30 AWG to #10 AWG, 7 to 10 millimeters, 0.6 to 0.7 Newton-meter, – 50 to +120 degrees Celsius
One-Circuit Feed-Through Grounding Blocks3 Connection points, 2 on one side#30 AWG to #10 AWG, 7 to 10 millimeters, 0.5 to 0.7 Newton-meter, – 50 to +120 degrees Celsius
Two-Circuit Feed-Through Grounding BlocksStandard Feedthrough# 26 AWG to # 10 AWG, 7 to 10 millimeters, 0.5 to 1.0 Newton-meter,  – 50 to +120 degrees Celsius
Two-Circuit Feed-Through Grounding Blocks4 Connection points/Two-level block#26 AWG to #10 AWG, 8 to 10 millimeters, 0.5 to 1.0 Newton-meter,  – 50 to +120 degrees Celsius
Space-Saver Grounding BlocksSingle-circuit grounding22 AWG to 4 AWG, 11 to 13 millimeters, 0.7 to 2.1 Newton-meter, – 40 to +90 degrees Celsius

D) Fuse Screw-type Terminal Blocks

These terminal blocks are used for overcurrent protection. They are available in a range of sizes for different types of fuses. They have nickel-plated terminals, stainless steel screws, and a status/neon fuse indicator light.

This family provides a diverse range of terminal blocks with the parameters listed below.

Fuse Screw-type Terminal Blocks Specifications

CategorySub-CategoryIEC Specifications (Voltage Rating, Maximum Current, Fuse Size, Wire Size Range, Wire Strip Length, Recommended Tightening Torque, Housing Temperature Range)
One-Circuit Fuse Blockswith or without blown fuse indication10 to 500 volts AC/DC,  6.3 Amperes, 1/4 x 5/4 inches, 6mm², 12 millimeters, 1.2 Newton-meter, – 50 to +120 degrees Celsius
One-Circuit Fuse Blocks, Type Jwith or without blown fuse indication10 to 500 volts AC/DC,  6.3 Amperes, 5 x 20 millimeters, 6mm², 12 millimeters, 1.6 Newton-meter, – 50 to +120 degrees Celsius
One-Circuit Fuse Blocks, Type WNon-Indicating500 volts AC/DC, 15 Amperes, 5 x 20 millimeters, 0.5 – 4mm², 8 millimeters, 0.3 to 0.6 Newton-meter, – 40 to +90 degrees Celsius
One-Circuit Fuse Blocks, Type WRed LED indicator10 to 57 volts AC/DC, 15 Amperes, 5 x 20 millimeters, 0.5 – 4mm², 8 millimeters, 0.3 to 0.6 Newton-meter, – 40 to +90 degrees Celsius
One-Circuit Fuse Blocks, Type WNeon indicator85…264 volts AC, 15 Amperes, 5 x 20 millimeters, 0.5 – 4mm², 8 millimeters, 0.3 to 0.6 Newton-meter, – 40 to +90 degrees Celsius
Two-Level Blocksfeedthrough and 
hinged-arm fuse circuit
500 volts AC/DC, 6.3 Amperes, 5 x 20 millimeters, 0.5 – 4mm², 9 millimeters, 0.65 Newton-meter, – 50 to +120 degrees Celsius
Three-Level Blocksground point, feedthrough & 
hinged-arm fuse circuit
500 volts AC/DC(IEC), 6.3 Amperes (IEC), 5 x 20 millimeters, 0.5 – 4 mm², 9 millimeters, 0.65 Newton-meter, – 50 to +120 degrees Celsius

E) Internal Component Screw-type Terminal Blocks

These blocks come with electronic components such as a diode (Forward/Reverse mode), capacitor, surge suppressor, and resistor to permit the insertion of these components in control circuitry.

This family offers a wide variety of terminal blocks with the specifications stated below.

Internal Component Screw-type Terminal Blocks Specifications

CategorySub-CategoryIEC Specifications (Voltage Rating, Maximum Current, Current through Busbar, Wire Size Range, Wire Strip Length, Recommended Tightening Torque, Housing Temperature Range)
One-Circuit Feedthrough Blockssingle-level forward diode with test plug ports500 volts AC/DC, 6  Amperes, 14 Amperes, 0.5 – 2.5mm², 10 millimeters, 0.5 – 0.7 Newton-meter, – 50 to +120 degrees Celsius
Two-Circuit Feedthrough Blocksforward bias diode between the two levels400 volts AC/DC (1000 volts reverse voltage rating), 1 Ampere, 10 Amperes, 2.5mm², 10 millimeters, 0.5 – 0.8 Newton-meter, – 50 to +120 degrees Celsius
Two-Circuit Feedthrough Blocksreverse bias diode between the two levels400 volts AC/DC (1000 volts reverse voltage rating), 1 Ampere, 10 Amperes, 2.5mm², 10 millimeters, 0.5 – 0.8 Newton-meter, – 50 to +120 degrees Celsius
Two-Circuit Feedthrough Blocks249-ohm precision wire wound resistor between the two levels400 volts AC/DC, — , 10 Amperes, 2.5mm², 10 millimeters, 0.5 – 0.8 Newton-meter, – 50 to +120 degrees Celsius
Two-Circuit Feedthrough Blocksa MOV between the two levels115 volts AC/DC, —, 24 Amperes, 2.5mm², 10 millimeters, 0.5 – 0.8 Newton-meter, – 50 to +120 degrees Celsius

F) Multi-circuit Feedthrough Screw-type Terminal Blocks

These blocks allow control signals to connect or distribute within the same block. This family offers a wide range of connectors with the following specifications.

Multi-circuit Feedthrough Screw-type Terminal Blocks Specifications

CategorySub-CategoryIEC Specifications (Voltage Rating, Maximum Current, Wire Size Range, Wire Strip Length, Recommended Tightening Torque, Housing Temperature Range)
Two-circuit feedthrough BlocksTwo-level400 volts AC/DC, 24 Amperes, 2.5mm², 10 millimeters, 0.5 – 0.8 Newton-meter, – 50 to +120 degrees Celsius
Two-circuit feedthrough BlocksTwo-level800 volts AC/DC, 32 Amperes, 0.5 to 4mm², 8 millimeters, 0.5 Newton-meter, – 50 to +120 degrees Celsius
Three-circuit feedthrough BlocksThree-level with ground point400 volts AC/DC, 24 Amperes, 0.5 to 2.5mm², 7 millimeters, 0.5 Newton-meter, – 50 to +120 degrees Celsius

G) Double Level Plug-in Screw-type Terminal Blocks

These terminal Blocks double the circuit wiring density by allowing the plugging of discrete electronic components, including circuit isolation plugs or fuses, etc.

This family includes a variety of connectors with the following features.

Double Level Plug-in Screw-type Terminal Blocks Specifications

CategorySub-CategoryIEC Specifications (Voltage Rating, Maximum Current, Wire Size Range, Wire Strip Length, Recommended Tightening Torque, Housing Temperature Range)
Two-circuit feedthrough Blocks with Selectable component plug-in deviceInternal Surge Suppression500 volts AC/DC, 24 Amperes, 2.5mm², 8 millimeters, 0.5 Newton-meter, – 50 to +120 degrees Celsius
Two-circuit feedthrough Blocks with Selectable component plug-in deviceInternal Surge Suppression500 volts AC/DC, 24 Amperes, 2.5mm², 8 millimeters, 0.5 Newton-meter, – 50 to +120 degrees Celsius
Two-circuit feedthrough Blocks with Selectable component plug-in deviceInternal Surge Suppression115 volts AC, 24 Amperes, 2.5mm², 8 millimeters, 0.5 Newton-meter, – 50 to +120 degrees Celsius

H) Process IEC Screw-type Terminal Blocks

These small-size terminal blocks are specially designed for process marshaling. They save 45% or more space in the panel, offer integrated shielding connections and eliminate the necessity of a grounding terminal.

These blocks have the following subcategories and specifications.

Process IEC Screw-type Terminal Blocks Specifications 

CategorySub-CategorySpecial FeatureIEC Specifications (Voltage Rating, Maximum Current, Wire Size Range, Wire Strip Length, Recommended Tightening Torque, Housing Temperature Range)
One-circuit feedthrough BlocksStandardStandard Feedthrough800 volts AC/DC, 24 Amperes, 2.5mm², 10 millimeters, 0.5 – 0.6 Newton-meter, – 50 to +120 degrees Celsius
One-circuit feedthrough BlocksDisconnect style fusible blockWith or Without Fuse Indication10 to 500 volts AC/DC, 6.3 Amperes, 2.5mm², 10 millimeters, 0.5 – 0.6 Newton-meter, – 50 to +120 degrees Celsius
One-circuit feedthrough BlocksDisconnect style fusible block with ground connectionWith or Without Fuse Indication10 to 500 volts AC/DC, 6.3 Amperes, 2.5mm², 10 millimeters, 0.5 – 0.6 Newton-meter, – 50 to +120 degrees Celsius
One-circuit feedthrough BlocksKnife disconnect style blockStandard Feedthrough500 volts AC/DC, 20 Amperes, 2.5mm², 10 millimeters, 0.5 – 0.6 Newton-meter, – 50 to +120 degrees Celsius
One-circuit feedthrough BlocksKnife disconnect and ground connectionStandard Feedthrough500 volts AC/DC, 20 Amperes, 2.5mm², 10 millimeters, 0.5 – 0.6 Newton-meter, – 50 to +120 degrees Celsius
One-circuit feedthrough BlocksKnife disconnect and ground connectionTest Screws500 volts AC/DC, 20 Amperes, 2.5mm², 10 millimeters, 0.5 – 0.6 Newton-meter, – 50 to +120 degrees Celsius

Spring-clamp Terminal Blocks

Allen Bradley’s spring-clamp terminal blocks are din rail-mounted blocks that offer time-saving, easy troubleshooting, secure, and durable connections compared to screw-type terminal blocks.

This product line offers a variety of terminal blocks. We will discuss their features and applications in this section to help you select a terminal block for your system.

A) Feed-Through Spring-clamp Terminal Blocks

This catalog offers standard feedthrough blocks for single-circuit applications and specialty feedthrough blocks with two levels to create a common link between two circuits.

This family provides a variety of connectors with the following specs.

Feed-Through Spring-clamp Terminal Blocks Specifications 

CategorySub-CategorySpecial FeatureIEC Specifications (Voltage Rating, Maximum Current, Wire Size Range, Wire Strip Length, Housing Temperature Range)
Standard Feedthrough blocksOne-circuit feedthrough BlocksStandard Feedthrough500 to 800 volts AC/DC, 17.5 to 125 Amperes, 1.5  to 35mm², 10 – 25 millimeters, – 50 to +120 degrees Celsius
Standard Feedthrough blocksOne-circuit feedthrough Blocks2 Connection points on one side500 to 800 volts AC/DC, 17.5 to 41 Amperes, 1.5  to 6mm², 10 – 13 millimeters, – 50 to +120 degrees Celsius
Standard Feedthrough blocksOne-circuit feedthrough Blocks2 Connection points on each side500 to 800 volts AC/DC, 17.5 to 32 Amperes, 1.5  to 4mm², 10 – 12 millimeters, – 50 to +120 degrees Celsius
Standard Feedthrough blocksOne-circuit feedthrough BlocksCenter Jumper Connection /Feed based Power Distribution Block 500 volts AC/DC, 76 Amperes, 16mm², 18 millimeters, – 50 to +120 degrees Celsius
Speciality Feedthrough BlocksTwo-Circuit Feed-Through Blocka commoning bar connecting two circuits.500-800 volts AC/DC, 17.5 – 32 Amperes, 1.5 to 4  mm², 10 millimeters, – 50 to +120 degrees Celsius

B) Multi-circuit Feed-through Spring-clamp Terminal Blocks

These connectors offer a high-wiring density and allow the joining/splitting of control circuits within the same block. 

The following connectors are available in this product range.

Multi-circuit Feedthrough Spring-clamp Terminal Blocks Specifications

CategoryIEC Specifications (Voltage Rating, Maximum Current, Wire Size Range, Wire Strip Length, Housing Temperature Range)
Two-circuit feedthrough Blocks500-800 volts AC/DC, 17.5 – 32 Amperes, 1.5 to 4mm², 10 millimeters, – 50 to +120 degrees Celsius
Side-by-Side Two-circuit feedthrough Blocks800 volts AC/DC, 24 Amperes, 2.5mm², 10 millimeters, – 50 to +120 degrees Celsius
Three-circuit feedthrough Blocks500 volts AC/DC, 20 Amperes, 2.5mm², 10 millimeters, – 50 to +120 degrees Celsius

C) Sensor Spring-clamp Terminal Blocks

These Plug-in style blocks allow coordination of three-wire sensor applications. They have status indicators for voltage ranges of 10 volts to 30 volts.

This product line offers a variety of connectors as tabulated below.

Sensor Spring-clamp Terminal Blocks Specifications 

CategorySpecial FeatureIEC Specifications (Voltage Rating, Maximum Current, Wire Size Range, Wire Strip Length, Housing Temperature Range)
Three Conductor Sensor Block (3 circuits)With or Without LED250 volts AC/DC without LED (5…30V AC/DC with LED) , 17.5 Amperes, 1.5mm², 8 millimeters, – 50 to +120 degrees Celsius
Three Conductor Sensor Block (4 circuits)With or Without LED250 volts AC/DC without LED (5…30V AC/DC with LED) , 17.5 Amperes, 1.5mm², 8 millimeters, – 50 to +120 degrees Celsius
Plug-In Distribution Block  – Internally JumperedStandard Feedthrough250 volts AC/DC without LED (5…30V AC/DC with LED) , 17.5 Amperes, 1.5mm², 8 millimeters, – 50 to +120 degrees Celsius
Plug-In Distribution Ground Block – Internally JumperedStandard Feedthrough250 volts AC/DC without LED (5…30V AC/DC with LED) , 17.5 Amperes, 1.5mm², 8 millimeters, – 50 to +120 degrees Celsius
Three Conductor Sensor Ground Block ( 3/4 circuits)Standard Feedthrough250 volts AC/DC, 17.5 Amperes, 1.5mm², 8 millimeters, – 50 to +120 degrees Celsius

D) Panel Mount Mini Spring-clamp Terminal Blocks

These terminal blocks are preferred in high-density wiring applications. They come with the following types and features.

Panel Mount Mini Spring-clamp Terminal Blocks Specifications

CategorySpecial FeatureIEC Specifications (Voltage Rating, Maximum Current, Wire Size Range, Wire Strip Length, Housing Temperature Range)
Mini Surface Mount Feedthrough BlockStandard Feedthrough800 volts AC/DC, 24 Amperes, 2.5 mm², 10 millimeters, – 50 to +120 degrees Celsius
Mini Surface Mount Feedthrough BlockEnd Block800 volts AC/DC, 24 Amperes, 2.5 mm², 10 millimeters, – 50 to +120 degrees Celsius
Mini Surface Mount Feedthrough Block4 Connection points800 volts AC/DC, 24 Amperes, 2.5 mm², 10 millimeters, – 50 to +120 degrees Celsius
Mini Surface Mount Feedthrough Block4 Connection points End Block800 volts AC/DC, 24 Amperes, 2.5 mm², 10 millimeters, – 50 to +120 degrees Celsius

E) Neutral Disconnect & Installation Spring-clamp Terminal Blocks

These blocks operate through a sequence of feed-through circuits, ground circuits, and circuits connected directly to a bus bar. They offer additional safety by necessitating the use of a tool to open/close these circuits. These three-circuit blocks come with 1 neutral disconnect, 1 Feedthrough, and 1 ground connection.

Neutral Disconnect & Installation Spring-clamp Terminal Blocks Specifications

Specifications CSA IEC 
Height x Length x width 41x 95 x 5.1 mm  
Voltage rating 300V AC/DC 400V AC/DC 
Wire Range 26 to 12 AWG 2.5mm² 
Current Rating 10A 24A 
Wire strip length 8mm  
Housing Temp range -50 to 120o  

F) Grounding Spring-clamp Terminal Blocks

These terminal blocks provide a grounding connection to the din rail. You may provide a grounding point in your system using these blocks to protect against earth or ground faults.

Grounding Spring-clamp Terminal Blocks Specifications 

CategorySub-CategorySpecifications (Wire Range, Wire Strip Length, Housing Temperature Range)
One-Circuit Feed-Through Grounding BlocksStandard Feedthrough1.5 to 35mm² , 10 to 25 millimeters, – 50 to +120 degrees Celsius
One-Circuit Feed-Through Grounding Blocks2 Connection points on each side1.5 to 6mm² , 10 to 13 millimeters, – 50 to +120 degrees Celsius
One-Circuit Feed-Through Grounding Blocks3 Connection points, 2 on one side1.5 to 4mm² , 10 to 12 millimeters, – 50 to +120 degrees Celsius
One-Circuit Feed-Through Grounding Blocks1 fixed and 1 plug-in connection0.5 to 2.5mm² , 10  millimeters, – 50 to +120 degrees Celsius
Two-Circuit Feed-Through Grounding BlocksStandard Feedthrough 
(17.5 to 32 Amperes @ 500 to 800 Volts AC/DC)
1.5 to 4mm² , 10  millimeters, – 50 to +120 degrees Celsius
Two-Circuit Feed-Through Grounding BlocksA commoning bar connecting two circuits1.5 to 4mm² , 10  millimeters, – 50 to +120 degrees Celsius

G) Comb Connection Spring-clamp Terminal Blocks

These blocks have a standard cage-type clamp connection on one side and a comb-style connection on the other end. These connectors allow you to connect multiple connections quickly within one block. 

Comb Connection Spring-clamp Terminal Blocks Specifications

CategorySub-CategoryIEC Specifications (Voltage Rating, Maximum Current, Wire Size Range, Wire Strip Length, Housing Temperature Range)
One-circuit feedthrough BlocksPlug in comb connections on one side250 volts AC/DC, 16 Amperes, 2.5mm², 10 millimeters, – 50 to +120 degrees Celsius
Two-circuit feedthrough BlocksPlug in comb connections on one side250 volts AC/DC, 16 Amperes, 2.5mm², 10 millimeters, – 50 to +120 degrees Celsius

H) Interlocking Mini-block Spring-clamp Terminal Blocks

These rail/panel mount terminal blocks have 600 volts UL-rated springs. They are used for high-dense wring systems.  

They come in a variety of types, as listed below. 

Interlocking Mini-block Spring-clamp Terminal Blocks Specifications

CategorySub-CategoryIEC Specifications (Voltage Rating, Maximum Current, Wire Size Range, Wire Strip Length, Housing Temperature Range)
Mini Rail MountFeedthrough  Block800 volts AC/DC, 24 Amperes, 2.5mm², 10 millimeters, – 50 to +120 degrees Celsius
Mini Rail MountFeedthrough Ground BlockGrounding, Grounding, 2.5mm², 10 millimeters, – 50 to +120 degrees Celsius

Final Remarks

While selecting the terminal blocks for your system, keep in mind the maximum current, ambient temperature, voltage rating, wire ratings, and purpose of using these blocks, such as grounding and fusing along-with space-saving connections.

Screw Terminal BlockSpring Terminal Block
Using a screw to fix the connectionUsing a spring to hold the connection
Old TechnologyAdvanced Technology
Screw driver is necessaryNo need of screw driver
More wiring timeLess wiring time
Wires connect/Disconnect difficultPlugin / Plug out easy
Wire damage chances during connection0 % Wire damage chances during plug in/out
Available in both din rail /panel mountedAvailable in both din rail/panel mounted
Less reliable in harsh environments(vibrations)Less reliable in harsh environments(vibrations)

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