ABB TEY2100MM Circuit Breaker

The TEY2100MM is specifically designed as a tenant main breaker for ABB ReliaMod modular metering systems. It fits into the tenant breaker sockets of ReliaMod meter stacks that are rated to accept 42kAIC to 100kAIC tenant breakers.

This tenant breaker features a bolt-on mounting design. It bolts directly into the bus of compatible ABB ReliaMod modular metering sections, providing a secure connection that resists loosening over time.

No. While both are 100A, 2-pole breakers in the TEY family, the MM suffix indicates this model is specifically configured as a tenant breaker for ReliaMod modular metering. A standard TEY2100 is typically used as a branch breaker in GE or ABB A-Series lighting panelboards.

The TEY2100MM utilizes a fixed thermal-magnetic trip unit. It provides both long-time thermal protection against continuous overloads and instantaneous magnetic protection against short circuits.

Yes, the TEY2100MM features an internal common trip mechanism. If an overcurrent or short circuit occurs on either phase, the common trip bar ensures both poles disconnect simultaneously to prevent single-phasing of 240V loads.

Yes. The internal mechanism is designed for quick-make and quick-break operation. This ensures the contacts close and open at a consistent speed regardless of how the handle is operated, which minimizes arcing and extends the lifespan of the breaker.