NEW ARRIVAL: Siemens SENTRON 3VA9908-0BB25 Undervoltage Release Now Available
Model Description
We are pleased to announce the immediate availability of the Siemens SENTRON 3VA9908-0BB25 undervoltage release, a critical safety accessory engineered for 3VA1 and 3VA20-26 molded case circuit breakers. This compact device mounts directly on the breaker’s accessory slot and trips the main contacts when the supply voltage drops below defined thresholds (typically 35–70% of rated 208–230V AC, 50/60Hz). Rated at 2VA apparent power consumption, the release provides a reliable shunt-trip function for generator backup systems, critical motor protection and safety circuits where unwanted re-energisation must be prevented. Its 25.7mm width and 28.8mm depth integrate seamlessly in S0–S3 frame breakers without increasing panel depth, and the screw terminals accept 0.5–1.5mm² (AWG 20–16) conductors for rapid installation .
Key Features
The 3VA9908-0BB25 delivers 4kV impulse withstand and Pollution Degree 3 / Overvoltage Category III certification, ensuring reliable operation in dusty or humid industrial environments. Mechanical life exceeds 10,000 operations, while the non-repairable design guarantees maintenance-free service for >20 years. CE, cULus, CCC and RoHS approvals (since June 2012) validate global deployment. The unit weighs only 91g, draws negligible standby current and operates from –20°C to +70°C, making it suitable for control panels, switchboards and OEM skid assemblies without thermal derating. The front-mounted test button allows functional verification without opening the breaker, reducing commissioning time and enhancing operator safety .
Related Models in the 3VA9 Accessory Family
The 3VA9 line offers complementary functions within the same 3-slot footprint. 3VA9907-0BB25 provides an auxiliary switch (1NO/1NC) for status signalling, while 3VA9910-0BB25 adds an alarm contact that latches on overload. 3VA9908-0BB24 supplies a 24V DC undervoltage release for DC-control circuits, and 3VA9912-0BB25 delivers a shunt-trip release for remote electrical tripping. All variants share identical mounting geometry, terminal layout and IP20 protection, enabling one-size cut-outs and unified wiring diagrams across 3VA1 (100–160A) and 3VA2 (100–630A) breaker families .
Our Competitive Advantages
As a dedicated Industrial Automation trader, we provide exceptional procurement flexibility and customer-centric service solutions. Our adaptable payment structures accommodate wire transfer arrangements and customized credit facilities for approved partners, removing financial barriers to urgent maintenance requirements. We maintain significant strategic inventory in regional distribution hubs, enabling delivery within 5-7 business days to most industrial centers worldwide. Our extensive sourcing network spans premium European and Asian sensor distribution channels, ensuring authentic Telemecanique component traceability without geographic restrictions. This multi-channel approach guarantees availability during global supply chain disruptions. Our application engineers provide sensor selection consultation, detection distance calculation, and integration support, assisting with control logic configuration and wiring optimization. Through direct manufacturer partnerships and streamlined logistics, we deliver genuine Telemecanique inductive sensors with accelerated fulfillment cycles and competitive pricing structures.
For immediate quotations or technical consultation, please contact our dedicated sales team.
About Us
We are a focused industrial-automation components trader committed to delivering authentic Siemens SENTRON protection solutions with speed, flexibility and technical expertise.