From the Manufacturer
Siemens 4 space, 8 circuit, Main Lug Load Center is 125 Amp rated and intended for Surface mount applications. This enclosure is indoor rated.
Product Description
Single phase, 3 wire, solid neutral, 4 spaces and 8 circuits max 1-pole, 2 QP breakers max 2-pole, 120/240 Volts AC. 10,000 AIR. One piece plated aluminum bus bar. 100% circuit breaker twistouts. Positive load side circuit breaker hook rail. Suitable foruse as service equipment when a main breaker (100 amp max) is back-fed in a branch position and used with main breaker retainer clip No.MBR1. When used as service equipment, any unused neutral position may be used for equipment grounding. Rotate entire device 180 degrees for bottom feed. Gray enamel finish. CSA and U.L. Listed, complies fully with NEC and U.L. requirements for Class CTL. Ten Year Limited Warranty.