The Siemens 5SL7425-7RC is a Betagard miniature circuit breaker with four poles, C-curve trip characteristic, and 25 A rated current. The higher IEC figure matters when the MCB is used in industrial distribution where fault currents can exceed the residential EN rating — the 20 kA SCCR gives headroom for coordination with upstream breakers in a 400 V panel.
The housing is 18 mm wide (4 modular units on a DIN rail), 76 mm deep, and 90 mm tall, with an installation depth of 70 mm. The sealable design (tamper-proof cover available) suits installations where lockout/tagout or access control is required. Halogen-free and silicon-free construction means no corrosive off-gassing under fault — relevant for sealed enclosures or environments sensitive to silicone contamination (paint lines, electronics assembly).
Rated for 440 V AC maximum in multi-phase or single-phase operation. Overvoltage category III (distribution level), pollution degree 2. Power loss is 2.4 W per pole in hot operating state at rated current. Vibration resistant per IEC 60068-2-6.