Siemens 3VF9221-1JD10 Shunt Trip Release Module

Siemens 3VF9221-1JD10 Shunt Trip Release Module is a 24 V DC shunt-release accessory designed for Siemens 3VF2 molded‑case circuit breakers. When its 24 V DC coil is energized, the module triggers the breaker to trip, delivering rapid, remote disconnection from a supervisory or safety system. Specifically built for the 3VF2 frame, it integrates with the breaker's trip mechanism to provide a dedicated remote‑trip input that can be wired to control circuits, alarms, or emergency shutdown logic. For installation, this release complements the base breaker without replacing its main trip assembly, enabling protection schemes that require remote activation across building automation or industrial protection networks. Typical applications include safety interlocks and emergency shutdown sequences where a remote signal must initiate a fast disconnect, ensuring isolation of hazardous equipment or power feeds while maintaining compatibility with Siemens’ 3VF2 ecosystem.