C4/63R-EH1-115 IMO Black External Handle Extension Shaft 115mm

Why Choose the IMO C4/63R-EH1-115 Door-Coupling Rotary Mechanism?

The IMO C4/63R-EH1-115 is a robust black door-coupling rotary mechanism with a 115 mm extension shaft designed specifically for IMO C4/63R motor circuit breakers. It allows the circuit breaker to be operated externally from the front of an electrical enclosure, providing convenient and clearly defined ON/OFF control without requiring direct access to the breaker inside the panel.

As part of the IMO C4 motor circuit breaker accessory range, the C4/63R-EH1-115 provides a practical solution for panel builders and machine manufacturers requiring externally operated motor protection. The door-locking mechanism helps prevent accidental opening of the enclosure while the circuit breaker is in the ON position, supporting safer operation and maintenance procedures.

The mechanism features a black rotary handle, a 115 mm extension shaft and an IP65 protection rating. When installed with a compatible C4/63R motor circuit breaker, the mechanism provides an operating dimension range of approximately 194–255 mm and allows the OFF position to be secured using up to three padlocks.

Key Advantages

• Purpose-designed door-coupling rotary mechanism for IMO C4/63R motor circuit breakers.
• 115 mm extension shaft for enclosure-mounted operation.
• Black external rotary handle for clear circuit breaker control.
• IP65 protection rating for demanding industrial panel applications.
• Door interlocking helps prevent accidental enclosure opening while the breaker is ON.
• OFF position can be secured with up to three padlocks for safer maintenance isolation.

Key Features

• IMO C4 motor circuit breaker accessory.
• Black door-coupling rotary mechanism.
• 115 mm extension shaft.
• Designed specifically for IMO C4/63R motor circuit breakers.
• IP65 rated external handle arrangement.
• Door-locking function in the ON position.
• OFF-position padlocking facility for up to three padlocks.
• Approximate operating dimension range of 194–255 mm.

External Motor Circuit Breaker Operation

Door-coupling rotary mechanisms allow an internally mounted motor circuit breaker to be operated from outside an electrical enclosure. The handle is mounted on the enclosure door and mechanically connected to the circuit breaker by an extension shaft, providing convenient operation while the breaker itself remains protected inside the panel.

The IMO C4/63R-EH1-115 also incorporates a door-locking function designed to prevent accidental opening of the enclosure while the circuit breaker is switched ON. When switched to OFF, the mechanism can be secured with up to three padlocks, making it particularly useful for industrial maintenance and isolation procedures.

Typical Applications

• Industrial motor control panels.
• Machinery electrical enclosures.
• Motor starter assemblies.
• Automation and manufacturing equipment.
• Pump, fan and conveyor control systems.
• OEM machinery and electrical panel building.