PRODUCT DESCRIPTION
SIEMENS 3VA9157-0FK21 - Auxiliary Switch
This component is an auxiliary switch designed for integration with SIEMENS 3VA molded case circuit breakers. It provides remote indication of the circuit breaker's operational status, specifically the main contact position (ON/OFF). This device is critical for supervisory control and data acquisition (SCADA) systems, interlocking circuits, and status monitoring in industrial power distribution and control panels, ensuring precise feedback for automation and safety systems.
Technical Specifications:
- SERIES/FAMILY: SIEMENS 3VA Molded Case Circuit Breaker Accessories
- COMPONENT TYPE: Auxiliary Switch
- ELECTRICAL SPECS:
- CONTACT CONFIGURATION: 1 Normally Open (NO) + 1 Normally Closed (NC)
- RATED OPERATIONAL VOLTAGE (AC): 240VAC
- RATED OPERATIONAL VOLTAGE (DC): 24VDC
- RATED OPERATIONAL CURRENT (AC-15): 3A at 240VAC
- RATED OPERATIONAL CURRENT (DC-13): 1A at 24VDC
- MECHANICAL/PHYSICAL:
- MOUNTING: Internal, snap-on installation within host MCCB
- FUNCTION: Indicates main contact position (ON/OFF)
- INTERFACE/CONTROL:
- CONNECTION TYPE: Screw terminals
- SIGNAL TYPE: Dry contact closure
- ENVIRONMENTAL/MOUNTING:
- IP RATING: Inherits IP rating of the host MCCB enclosure when installed
- OPERATING TEMPERATURE: -25°C to +70°C
- COMPATIBILITY/APPLICATION:
- COMPATIBLE MCCB SERIES: SIEMENS 3VA1 Molded Case Circuit Breakers
- APPLICATION: Remote status indication, interlocking, SCADA integration, control circuit signaling in industrial and commercial power distribution systems.