Overview
The Siemens Q220 is a 20A, two-pole Type QP thermal-magnetic circuit breaker for compatible Siemens load centers. It provides common-trip protection for 120/240V AC circuits, carries a 10 kA interrupting rating, and uses Type QP plug-in bus mounting with a pressure-plate / box-lug load connection.
Key Features
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Common-trip protection: Both poles open together during an overload or short-circuit trip.
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Thermal-magnetic operation: Thermal response protects against sustained overloads while magnetic action responds rapidly to high-current faults.
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Installation: Type QP plug-in construction connects to the bus in a compatible Siemens load center; the load conductor terminates at the pressure-plate box lug.
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Compatibility: Use only in Siemens panels whose labeling lists Type QP breakers and the required two-pole position.
Specifications
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Manufacturer / model: Siemens Q220
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Family / frame: Type QP, QP frame
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Electrical rating: 20A, 2 pole, 120/240V AC, single phase
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Interrupting rating: 10 kA
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Trip / mounting: Thermal-magnetic common trip; plug-in
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Terminal connection: Pressure plate with box lug / load lug
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Conductor range: #14–6 AWG overall, within manufacturer-approved copper/aluminum combinations
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Calibration / certifications: 40°C; UL 489, CSA certified, HACR rated
Common Applications
- Compatible Siemens load centers supplying listed 20A, 240V equipment circuits.
- Residential and light-commercial branch circuits requiring a 20A two-pole common-trip breaker.
- Exact-model replacement and panel maintenance where Siemens Q220 is specified.
