Siemens 3VA4125-4ED34-0AA0 Molded-Case Circuit Breaker

Siemens 3VA4125-4ED34-0AA0 is a three-pole molded‑case circuit breaker (MCCB) in the 3VA4 UL frame, rated In 25 A for 690 V AC service and designed for distribution panels requiring reliable overcurrent protection. It delivers fixed short‑circuit protection up to 25 kA at 480 V, with TM210 magnetic and thermal‑magnetic (FTFM) trip characteristics, and bears UL 489 markings. Weighing 0.743 kg, this 3‑pole device lists a maximum power loss of 8.2 W (2.7 W per pole) and a mechanical life of about 15,000 operating cycles, with electrical endurance of 8,000 cycles at 480 V and 4,000 cycles at 600 V. The unit is rated for 690 V and, as part of the 3VA4 UL frame, has a 125 breaking‑capacity class S rating. It supports neutral‑conductor retrofitting and uses clamp connections labeled None. Ambient temperature affects its current rating, specified as 25 A at 40°C and derating to 21 A at 70°C. The model is suitable for HACR‑type HVAC and similar load circuits where robust, code‑compliant protection is essential in industrial and commercial distribution panels.