Siemens NJX3B250 Low Voltage Circuit Breaker Alternate part: 3VL4140-3RR30-0AA0 Series Vl Ul Listed Molded Case Circuit Breaker With Thermal – Magnetic Trip Unit. Breaker Njg Frame With Normal Breaking Capacity. Non Interchangeable Trip. This part is normally stock. Request a Quote now or call us at 1-800-755-2883 for expert assistance. Technical Data Sheet .pdf Siemens VL molded case circuit breakers utilize a compact and modular design which can be configured to suit a wide range of ratings from 30 A