SIEMENS Q250 50-Amp Double-Pole QP Circuit Breaker — 240V Thermal-Magnetic, 10kAIC

The SIEMENS Q250 is a 50-amp, double-pole QP circuit breaker designed to protect 240V circuits from overloads and short circuits while fitting SIEMENS plug-in load centers.

This industrial-grade, thermal-magnetic breaker is built for reliable branch-circuit protection in residential and light-commercial panels. It features a 10,000 AIC interrupting rating and a plug-in design that simplifies installation in compatible Siemens enclosures. SIEMENS emphasizes using new, compatible breakers to preserve panel warranty and avoid safety risks associated with second-hand components.

What does this breaker do for my electrical system?

The Q250 detects excessive current and trips to stop overheating or wiring damage from sustained overloads or short circuits. Its double-pole configuration simultaneously disconnects both hot legs of a 240V circuit for safer interruption. Use it to protect appliances, HVAC units, subpanels, or other fixed 240V loads.

• Rated 50 amps for continuous and intermittent 240V loads
• Thermal-magnetic trip mechanism responds to overloads and high-current faults
• 10,000 AIC rating handles common fault levels in residential service
• Simultaneous two-pole disconnect for balanced 240V protection

Which panels and applications is the Q250 compatible with?

This QP-type breaker is made to plug into Siemens EQ, Ultimate, ITE, and Gould load centers and meter-combination enclosures. It also fits many Siemens PL and ES series load centers, providing broadly compatible protection across Siemens product lines. Confirm panel labeling and bus type before installation.

• Plug-in mount for Siemens EQ, Ultimate, ITE, and Gould panels
• Compatible with Siemens PL and ES series load centers
• Usable in 1- or 3-phase load centers where a 240V double pole is required
• Designed for standard residential and light-commercial wiring systems

How do I install and maintain this SIEMENS breaker safely?

Installation should be performed by a licensed electrician following local codes and the panel manufacturer’s instructions. The breaker plugs into the panel bus and secures in place; wiring should use appropriately sized conductors and torque values. SIEMENS cautions against using previously installed or “used” breakers, since that can void panel warranties and introduce safety risks.

• Have a qualified electrician perform mounting and conductor terminations
• Use the correct wire gauge and torque per panel and breaker specifications
• Do not install used or unapproved breakers—this may void the panel warranty
• Inspect periodically for signs of overheating, discoloration, or loose connections

What electrical ratings and features should I know about?

The Q250 is a 50A, 240V double-pole breaker with a 10,000-amp interrupting capacity. Its thermal-magnetic trip provides both overload and short-circuit protection, and the plug-in design includes time-saving wiring features for faster service. It’s intended for branch-circuit protection rather than service entrance use.

• 50 amp continuous rating on a two-pole, 240V configuration
• 10,000 AIC (ampere interrupting capacity)
• Thermal-magnetic trip technology for dual-mode protection
• Plug-in connections compatible with Siemens enclosures

Who is this for? Electricians, contractors, and knowledgeable homeowners who need a reliable 50A double-pole breaker for 240V circuits will find the SIEMENS Q250 appropriate. It’s well suited for protecting medium-load appliances, HVAC equipment, and subpanel feeds where compatibility with Siemens bus-type panels matters. If you manage or service Siemens load centers, choose new, manufacturer-approved breakers to keep installations safe and maintain warranty coverage.