General Electric TEY390 Molded Case Circuit Breaker

General Electric TEY390 Molded Case Circuit Breaker is a three-pole, 90-amp protective device designed for high-voltage, three-phase electrical distributions. Rated for 480/277 volts, the TEY390 model provides automatic overcurrent protection by interrupting fault current to prevent damage to conductors and downstream equipment. The molded case construction houses the trip mechanism and contacts in a compact enclosure, delivering reliable performance in space-constrained panels. With its 3-pole configuration and 90 A rating, this GE breaker is suited for applications that require simultaneous disconnection of all three phase conductors in the event of an overload or short circuit, helping to maintain system safety and stability. The TEY390 designation identifies a specific General Electric molded case breaker specification, ensuring compatibility with GE’s TEY family and the electrical protection characteristics associated with this exact configuration. Its 3-pole design aligns with three-phase power systems, and the 480/277 V rating indicates it can protect circuits fed from that voltage class.