WEG UMBW-1C1-30 is a 1-pole miniature circuit breaker (MCB) rated for 30A at 480VAC, featuring a C-type trip curve for general purpose applications. This UL1077 recognized supplementary protector is designed for branch circuit protection in control panels, machinery, and industrial equipment. It provides reliable overcurrent and short-circuit protection with a compact footprint for space-constrained installations.

The UMBW has a range from 1 to 63 Amps, available in 1,2, 3 poles, and B, C, D trip curves. Single pole and multi-pole thermal-magnetic miniature circuit breakers (MCBs) are in accordance with EN 60947-2, UL 1077 and UL 489 for DIN rail mounting with toggle actuation, visual status indication, and high interrupt capacity. A positively trip-free snap action mechanism ensures reliable switching behavior. A range of trip characteristics and add-on accessories make the UMBW suitable for a variety of applications.

• AC and DC voltages available in one series;
• UL489 branch circuit protective device;
• UL1077 equipment protection;
• 17.5mm width per pole;
• Visual status indication;
• Positive trip-free snap action mechanism to ensure reliable switching;
• Cuttable bus bar connecting system.