Ls Electric 626050363 Mcb 5A 1-pole 277VAC 10ka

Product Description

The LS ELECTRIC 626050363 is a single-pole miniature circuit breaker (MCB) from the BK Series, rated for 5 amps at 277 VAC with a 10 kA interrupt rating. It uses a thermal magnetic trip mechanism to provide overload and short-circuit protection in branch circuits. The BK63HU frame accepts wire sizes from 14 to 4 AWG via lug and screw terminals, and the unit mounts on standard DIN rail. It is rated IP20 and operates across a temperature range of -5 to 40 degrees C. Licensed electricians install this device in commercial and light industrial panelboards and distribution equipment where reliable overcurrent protection is required.

This breaker is suited for single-pole branch circuit protection in commercial electrical distribution systems operating at 277 VAC, a voltage common in commercial lighting and HVAC control circuits fed from 480Y/277-volt three-phase services. The C-curve trip characteristic makes it appropriate for loads with moderate inrush current, such as fluorescent and LED lighting ballasts and small motor-driven equipment. The compact 0.71-inch width allows tight layout on DIN rail assemblies where panel space is limited.

Key Features

• 5A continuous current rating at 277 VAC, 50/60 Hz
• 10 kA interrupt rating for robust short-circuit protection
• Thermal magnetic trip with C-curve characteristic for moderate-inrush loads
• DIN rail mounting in a compact 0.71-inch wide profile
• Lug and screw terminal accepts 14 to 4 AWG wire
• IP20 enclosure rating for finger-safe terminal access

Compatibility

Designed as a DIN rail-mount single-pole MCB within the LS ELECTRIC BK Series BK63HU frame family, suitable for 277 VAC branch circuit applications.

Installation Notes

Installation must be performed by a licensed electrician in accordance with the National Electrical Code (NEC) and applicable local codes. De-energize the distribution equipment and verify absence of voltage before wiring terminals. Confirm conductor size and torque requirements comply with the terminal rating and NEC Table 110.14 torque specifications. Do not exceed the 5A or 277 VAC ratings for the intended circuit application.