Reliable Dual-Pole Circuit Protection ✔️ 40A/2-Pole design safeguards 120V & 240V circuits against overloads and short circuits ✔️ Thermal-magnetic trip mechanism: Instant magnetic response for shorts (<0.1s) + delayed thermal trip for overloads ✔️ 10kA interrupt rating exceeds residential requirements (NEC compliant) Easy Plug-On Installation ✓ Tool-free installation fits Siemens PL/ES load centers (verify panel compatibility) ✓ Compact 1-inch per pole design saves space in crowded panels ✓ Clear "Trip/Reset" indicator for quick fault diagnosis ✓ Works with #14-4 AWG copper/aluminum wires (US standard) Commercial-Grade Durability 20,000+ mechanical operations tested (3x industry average) -40°F to 158°F temperature range for indoor/outdoor use Silver-nickel contacts reduce arcing and voltage drop Anti-vibration lock prevents nuisance tripping Versatile Applications ✔️ Home: Kitchen appliances, HVAC systems, garage subpanels ✔️ Business: Retail lighting, office server rooms, workshop panels ✔️ Outdoor: Pool equipment, generator transfer switches ✔️ Retrofit: Replaces old breakers for Siemens EQ/EQL/ES panels Risk-Free Purchase ✓ 30-day returns – No questions asked ✓ 2-year warranty against defects QP-Style 40A 2-Pole Circuit Breaker – Reliable Overload & Short Circuit Protection Ensure electrical safety for your home or business with this dual-pole 40A circuit breaker engineered for 120/240V systems. Featuring a thermal-magnetic trip mechanism, it delivers instant magnetic response to deadly short circuits (<0.1s) and gradual thermal shutdown for overloads (15A±20% threshold). The 10kA interrupt rating exceeds standard residential needs while complying with NEC safety codes. Why Choose This Breaker? ✔️ Tool-Free Plug-On Design: Installs in seconds on Siemens PL/ES load centers (verify panel compatibility) ✔️ Industrial Durability: 20,000+ mechanical cycles tested, silver-nickel contacts ✔️ All-Environment Performance: Operates flawlessly from -40°F to 158°F (-40°C to 70°C) ✔️ Multi-Scenario Use: Ideal for kitchens, HVAC systems, pool equipment, and generator transfer switches ✔️ US-Based Support: 30-day returns + 2-year warranty (PDF manual available on our storefront)