NEW ARRIVAL: Siemens SIRIUS 3RV2902-1AB0 Undervoltage Release Now Available
Model Description
We are pleased to announce the immediate availability of the Siemens SIRIUS 3RV2902-1AB0 undervoltage release, a critical safety accessory engineered for 3RV2 series motor starter protectors. This AC 24V (50/60Hz) release module mounts directly on the right side of S00, S0, S2 and S3 frame 3RV2 breakers, providing reliable shunt-trip functionality when control voltage drops below 35–70% of rated value. The compact device measures 45×25×30mm and features screw terminals accepting 0.5–1.5mm² conductors, enabling fast installation without panel modification. Weighing only 91g and consuming <2VA apparent power, the 3RV2902-1AB0 is ideal for generator backup systems, critical motor protection and safety circuits where unwanted re-energisation must be prevented in conveyor systems, pump stations and machine tool applications .
Key Features
The 3RV2902-1AB0 delivers 4kV impulse withstand and Pollution Degree 3 / Overvoltage Category III certification, ensuring reliable operation in dusty, humid or harsh industrial environments. The release provides instantaneous tripping with <45ms response time and integrates seamlessly with the breaker’s rotary mechanism, enabling padlockable lockout/tagout procedures. Mechanical durability exceeds 10,000 operations, while the maintenance-free, non-repairable design guarantees >20 years service life. CE, cULus, CCC, EAC and RoHS approvals (valid since June 2012) validate global deployment. The front-mounted test button allows functional verification without breaker disassembly, reducing commissioning time. Operating temperature spans –20°C to +70°C, making it suitable for control panels, switchboards and OEM skid assemblies without thermal derating .
Related Models in the 3RV2902 Accessory Family
The 3RV2902 line offers comprehensive protection functions for 3RV2 breakers. 3RV2902-1DS0 provides a 500V AC undervoltage release for higher voltage control circuits, while 3RV2902-1BB0 delivers a 24V DC variant for DC-powered systems. For status signalling, 3RV2902-1K offers auxiliary switch contacts (1NO+1NC), and 3RV2902-1J provides an alarm contact that latches on fault. 3RV2902-1E supplies a shunt-trip release for remote electrical tripping, and 3RV2902-1G enables mechanical interlocking between two breakers. All variants share identical mounting geometry, terminal layout and IP20 protection, enabling one-size panel cut-outs and unified wiring diagrams across 3RV2 motor starter protectors from 0.1A to 100A
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.
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About Us
We are a focused industrial-automation components trader committed to delivering authentic Siemens SIRIUS protection solutions with speed, flexibility and technical expertise.