Siemens 3VL9400-1UG00 — Undervoltage Releases

Description The Siemens 3VL9400-1UG00 undervoltage release is an internal accessory designed to trip circuit breakers automatically when supply voltage falls below acceptable levels. Operating at 110–127V AC with 50/60 Hz frequency, it ensures reliable protection in low-voltage systems. This unit is specifically engineered for Siemens VL series molded case circuit breakers, enabling safe and efficient operation. Technical Specifications Condition New/Never Used Surplus Brand Siemens Category Circuit Breaker Accessories Part Number 3VL9400-1UG00 Subcategory Undervoltage Releases Series VL Rated Control Voltage 110–127V AC Frequency 50/60 Hz Compatible Models VL160X, VL160, VL250, VL400 Mounting Position Right side Accessory Type Internal accessory Function Undervoltage tripping Application Low-voltage power distribution systems Weight 0.2 lb Information About 3VL9400-1UG00 The 3VL9400-1UG00 is part of Siemens’ VL series accessory range, developed for integration with molded case circuit breakers in industrial and commercial power distribution systems. It is designed for right-side installation, allowing seamless incorporation into VL160X, VL160, VL250, and VL400 breaker frames. Utilizing AC control voltage, it provides dependable undervoltage tripping to prevent equipment operation under unstable electrical conditions. This accessory is commonly used in automation systems and protection schemes where voltage monitoring and immediate response are critical. Key Features: Undervoltage Protection: Automatically trips the breaker when voltage drops below safe thresholds 110–127V AC Operation: Designed for standard AC control circuits Frequency Compatibility: Supports both 50 Hz and 60 Hz systems VL Series Compatibility: Suitable for VL160X, VL160, VL250, and VL400 circuit breakers Right-Side Installation: Enables proper mounting within the breaker assembly Internal Accessory Design: Integrates directly into the breaker for compact configuration Reliable Tripping Mechanism: Ensures consistent and immediate response to voltage loss Industrial Application Ready: Ideal for power distribution and automation environments The 3VL9400-1UG00 delivers the reliability and precision required for voltage monitoring and protection in molded case circuit breaker systems.