Siemens TC1J6600 Circuit Breaker Trip Unit Jd Ld

Product Description

The SIEMENS TC1J6600 is a trip unit accessory designed for use with JD and LD frame circuit breakers. Trip units control the overcurrent sensing and tripping functions of a molded-case circuit breaker, allowing field adjustment or replacement of the sensing mechanism without replacing the entire breaker assembly. This unit is rated for copper conductor applications and fits both 2-pole and 3-pole configurations. Licensed electricians and industrial maintenance technicians typically install or replace trip units during panel servicing, breaker retrofits, or when upgrading protection settings on existing switchgear.

This trip unit is suited for commercial and industrial electrical distribution systems where JD or LD frame Siemens molded-case circuit breakers are installed. It is commonly used in loadcenters, motor control centers, and panelboards requiring reliable overcurrent protection. The copper-rated design makes it appropriate for standard copper wiring installations in both new construction and retrofit applications.

Key Features

• Compatible with JD and LD frame molded-case circuit breakers
• Supports 2-pole and 3-pole breaker configurations
• Rated for copper conductor connections
• Allows trip unit replacement without full breaker changeout
• Compact form factor suited for standard panelboard and switchgear installations

Compatibility

Designed for use with Siemens JD and LD frame molded-case circuit breakers in 2-pole and 3-pole configurations with copper conductors.

Installation Notes

Installation should be performed by a licensed electrician in accordance with the National Electrical Code (NEC) and applicable local codes. De-energize and lock out the circuit breaker and all associated upstream equipment before beginning any work. Verify that the replacement trip unit matches the existing breaker frame designation and pole count before installation. Do not re-energize the panel until the trip unit is fully seated and secured per the manufacturer's instructions.

Technical Specifications

• Frame Compatibility: JD and LD
• Pole Configuration: 2-pole and 3-pole
• Conductor Material: Copper
• Dimensions (L x W x H): 8 inches x 5 inches x 1 inch
• Weight: 1.1 pounds

Standard Information

• Brand: SIEMENS
• Manufacturer Part Number: TC1J6600