SS250P 50 Amp Generator Power Inlet Box 3Prong Replacement for NEMA PB50 125/250 Volt 12500 Watts Short summary The SS250P power inlet box provides a direct 3prong 50 amp connection for 125/250 volt generator circuits. Designed as a straight replacement for NEMA PB50 style inlets, it supports up to 12500 watts and is intended for use with generator transfer switch installations. Key benefits Reliable connection: Provides a dedicated inlet for hooking a portable or standby generator to a transfer switch, enabling safe, consistent power delivery at full 50 amp capacity. Simple replacement: Matches NEMA PB50 3prong inlet footprint and wiring configuration for straightforward swapin replacement of worn or damaged inlet boxes. Clear compatibility: Supports 125/250 volt systems and handles up to 12500 watts, so you can connect common 50 amp generator models and transfer switches with confidence. Saves time on installation: Standard 3prong design and 50 amp rating reduce the need for custom wiring changes when replacing an existing PB50 inlet. Durable, serviceoriented design: Built to perform reliably as the power entry point for generatortotransferswitch connections. Function and performance Function: Acts as the external power inlet that accepts a generator cord and routes the 50 amp, 3prong feed into a transfer switch or distribution panel. Performance: Rated for 50 amps at 125/250 volts with a maximum load of 12500 watts when used on appropriate circuits and equipment. Compatibility and specifications Model: SS250P Amperage: 50 amp Prongs: 3prong inlet Voltage: 125/250 volt Power capacity: Up to 12500 watts Replacement for: NEMA PB50 style inlet boxes Intended use: Generator inlet for transfer switch installations Typical use scenarios Home standby power: a damaged inlet box on a residential transfer switch to restore the ability to connect a portable or standby generator during an outage. Maintenance and service work: Electricians and contractors swap in the SS250P when refurbishing or upgrading generator hookup points that use the NEMA PB50 configuration. Small business backup: Provide a reliable 50 amp inlet on a commercial building to connect portable generator power during shortterm outages or maintenance. What to check before Confirm your transfer switch and generator use a NEMA PB50 3prong 50 amp inlet configuration. Verify the circuit is rated for 125/250 volts and the expected load does not exceed 12500 watts. Ensure mounting and wiring arrangements match the replacement inlet footprint for a straightforward installation. This inlet box is a focused replacement component for restoring or installing a 50 amp generator feed that uses the NEMA PB50 3prong standard.