ERTD4GREY IMO ScrewClamp Disconnect Terminal 4mm, 600V, 16A, Blade System

Why Choose the IMO ERTD4GREY 4 mm² Screw Clamp Disconnect Terminal?

The IMO ERTD4GREY is a 4 mm² screw-clamp disconnect terminal block designed for industrial control, measurement and distribution circuits where a conductor path needs to be isolated without removing the connected wiring. Part of the IMO ERTD Series, it combines conventional screw termination with an integral blade disconnect system.

The disconnect blade allows the electrical path through the terminal to be opened for testing, commissioning, troubleshooting and maintenance. This provides a convenient isolation point directly within the terminal strip while leaving the incoming and outgoing conductors securely terminated.

The ERTD4GREY has a nominal cross-section of 4 mm² and a UL/cUL rating of 600 V, 16 A, AWG 26–10. IMO also specifies a 500 V, 16 A, 4 mm² rating for the ERTD4 series. With its compact 6.2 mm width and mounting on MR35 × 7.5 mm DIN rail, it is well suited to densely populated industrial control panels.

Key Advantages

• Integral blade disconnect system enables convenient circuit isolation.
• Allows circuits to be opened without disconnecting the installed conductors.
• Screw-clamp termination provides secure and established wiring technology.
• 4 mm² nominal cross-section for industrial control and distribution circuits.
• 600 V, 16 A UL/cUL rating for AWG 26–10 conductors.
• Compact 6.2 mm width conserves DIN rail space.
• Suitable for solid and fine-stranded conductors up to 6 mm².
• Useful for commissioning, testing, fault finding and maintenance applications.

Key Features

• IMO ERTD Series disconnect terminal.
• 4 mm² nominal cross-section.
• Screw-clamp conductor connection.
• Blade disconnect mechanism.
• Disconnect operation by lever.
• 600 V, 16 A UL/cUL rating.
• 500 V, 16 A, 4 mm² series rating.
• Solid conductor range: 0.5 to 6 mm².
• Fine-stranded conductor with ferrule: 0.5 to 6 mm².
• AWG conductor range: AWG 26–10.
• Insulation stripping length: 10 mm.
• Tightening torque: 0.5 to 0.8 Nm.
• Terminal width: 6.2 mm.
• Designed for MR35 × 7.5 mm DIN rail.
• Grey terminal body.
• Disconnect function operates without a fuse.

Reliable Circuit Isolation for Testing and Maintenance

Disconnect terminals provide a practical way to isolate individual circuits within a terminal strip without disturbing the field wiring. On the ERTD4GREY, opening the blade disconnect mechanism breaks the electrical connection through the terminal while the conductors remain securely held by their screw clamps. This can simplify testing, commissioning and troubleshooting procedures.

The combination of a 4 mm² nominal cross-section, 16 A current rating and 6.2 mm terminal width makes the ERTD4GREY suitable for compact industrial installations where accessible isolation points are required. Its blade system is a disconnect mechanism rather than a fuse holder, making it particularly useful for circuits that require manual separation for measurement or maintenance.

Typical Applications

• Industrial control panels.
• Measurement and test circuits.
• PLC and automation systems.
• Machine control wiring.
• Instrumentation circuits.
• Commissioning and diagnostic connections.
• Junction and marshalling panels.
• Circuits requiring convenient maintenance isolation.