Square D (Schneider Electric) M9F23101 Miniature Circuit Breaker. Schneider Electric Miniature Circuit Breaker, Multi-Standard, Series: C60SP, 240/415 VAC, 60 VDC, 1 A, 50/60 Hz Frequency, 10 kA Interrupt, D-Curve/Thermal Magnetic Trip, 12X In AC/17X In DC Trip, 1 Pole, Toggle Actuator, Tunnel Terminal Connection, 18 to 8 AWG Cu Wire, IP20/IP40 Enclosure, Clip-On/DIN Rail Mounting, -22 to 158 deg F, 0.71 in W x 2.83 in D x 3.19 in H Dimensions, Gray. Additional Description: SQD -M9F23101 Multi9 C60SP 1P D 1A MCB. Catalog Description: Multi9 - C60SP - MCB - 1P - 1 A - D Curve - 277 V - 10 kA - UL 1077.