{"product_id":"siemens-ed21b020-circuit-breaker","title":"Siemens | ED21B020 | Circuit Breaker | 20A | 1-Pole | 120V","description":"\u003cdiv\u003eSiemens ED21B020 Circuit Breaker is a dependable, ready-to-use solution for protecting 120V circuits with a precise 20A capacity in a single-pole configuration. Designed for maintenance, retrofit, and replacement needs, this exact part number (ED21B020) ensures you’re matching the switchgear to your panel’s specifications for reliable overload protection and consistent performance. Key specifications\n- Amperage: 20A\n- Poles: 1-Pole\n- Voltage: 120V\n- Part number: ED21B020 Why this Siemens breaker stands out\n- Exact compatibility: The ED21B020 is the best reference for ensuring your replacement matches the panel family and circuit requirements, reducing guesswork during replacements.\n- Targeted for residential and light commercial use: Perfect for restoring power to individual circuits in a typical 120V electrical system without overhauling your panel.\n- Straightforward installation: Designed for quick alignment and secure mounting in compatible Siemens panels, minimizing downtime during maintenance or retrofit projects.\n- Consistent protection for everyday loads: Suited for common 20A branch circuits such as kitchen outlets, lighting, and reusable power strips, helping to prevent nuisance trips and protect wiring. Ideal for\n- Homeowners performing panel maintenance or upgrades\n- Electricians doing retrofit work or panel replacements\n- Property managers maintaining rental properties with standard 120V circuits Use cases and practical scenarios\n- Replacing a tripped or faulty breaker in a Siemens panel to restore power to a specific circuit (lighting, outlets, appliance circuits) without affecting other branches.\n- Upgrading an older or mismatched breaker to the exact 20A, 1-Pole configuration to meet current wiring protection needs.\n- Stocking a reliable, ready-to-go replacement part for routine service calls or preventative maintenance. How to verify fit and install safely\n- Confirm fit: Use the part number ED21B020 as the primary reference against your panel model and required 20A, 1-Pole, 120V specification before ordering.\n- Prepare for installation: Power down the service disconnect and test the circuit with a voltage tester to confirm the circuit is de-energized.\n- Install correctly: Align the breaker with the panel’s slot, secure it firmly, and re-energize the main to test that the circuit operates normally without arcing or loose connections.\n- Post-install checks: Turn on the circuit and run basic loads to ensure proper trip behavior if an overcurrent condition occurs. Practical notes\n- Before purchasing, double-check the panel’s compatible breaker family and the exact ED21B020 specification to guarantee a seamless replacement.\n- This breaker is intended for standard 120V circuits in compatible Siemens panels and is optimized for straightforward maintenance and retrofit workflows. With the Siemens ED21B020, you get a precise, purpose-built 20A, 1-Pole 120V circuit breaker that makes maintenance and replacements predictable, fast, and reliable—helping you keep electrical systems safe and up to code.\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46424504565922,"sku":"ED21B020","price":320.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/siemens-ed21b020-circuit-breaker-20a-1-pole-120v-801.webp?v=1789373935","url":"https:\/\/www.ampstate.com\/products\/siemens-ed21b020-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}