Part of the QS frame family, this 225A, two-pole miniature circuit breaker offers upgraded fault protection for 120/240VAC applications. Designed for plug-on installation, it fits into Siemens Power Mod meter stacks and Uni-PAK metering equipment. It replaces legacy MPD2225KH and MDH225 breakers. With a high interrupting capacity of 22kAIC, it provides enhanced safety. The side-wired, right-hand bend design saves wire and eliminates the need for filler plates.
HACR Rated, Common Trip, Main Breaker, High Interrupting Capacity
Product FAQs
5 answers
What metering enclosures are compatible with the Siemens QS2225H?
This main breaker is specifically designed for plug-in installation within Siemens Power Mod Meter Stacks and Uni-PAK multi-family metering lines.
Do I need filler plates when installing the QS2225H in a Power Mod meter stack?
No. The QS frame is designed to fit into the exact same footprint as standard 100A QP breakers, so no additional filler plates are required to close panel gaps.
How does the terminal design on the QS2225H simplify wiring?
The breaker features an exclusive side-wired design that allows for a single right-hand bend. This eliminates the need to form difficult S-bends with heavy-gauge wire, saving space and reducing labor time inside the enclosure.
What safety precautions should be taken when terminating wires on the QS2225H?
When landing conductors, ensure that the stripped wires do not contact the barrier and that the end of the wire is visible in the terminal opening. Always use the strip gauge molded into the breaker to ensure proper insulation clearance.
Is the QS2225H suitable for use with heating and air conditioning equipment?
Yes, this breaker is HACR rated, meaning it is approved for use with heating, air conditioning, and refrigeration equipment that requires a dedicated overcurrent protection device.
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