{"product_id":"siemens-ed21b050-circuit-breaker","title":"Siemens | ED21B050 | Circuit Breaker | 50A | 1-Pole | 120V | Bolt-On","description":"\u003cdiv\u003eSiemens ED21B050 Circuit Breaker — 50A, 1-Pole, 120V, Bolt-On Designed for maintenance, retrofit, and replacement projects where exact specs matter, the Siemens ED21B050 is a dependable 50-amp, 1-pole circuit breaker built for bolt-on mounting. This part is your precise match when updating or repairing Siemens panels that require a 120-volt, single-pole protection device. Who this is for and when to use\n- Home and professional electricians performing panel maintenance, retrofits, or replacements in Siemens bolt-on systems.\n- Scenarios where a direct ED21B050 replacement is requested by model or panel labeling.\n- Projects that upgrade or isolate a single 120V circuit with a robust 50A protection device. Key specifications at a glance\n- Amperage: \u003cstrong\u003e50A\u003c\/strong\u003e\n- Poles: \u003cstrong\u003e1-Pole\u003c\/strong\u003e\n- Voltage: \u003cstrong\u003e120V\u003c\/strong\u003e\n- Mounting: \u003cstrong\u003eBolt-On\u003c\/strong\u003e\n- Part reference: \u003cstrong\u003eED21B050\u003c\/strong\u003e Why this specific breaker stands apart\n- Exact-match compatibility: By using the ED21B050 part number, you ensure the correct fit for Siemens bolt-on breaker slots, reducing guesswork during replacement.\n- Focused utility: A 50A, 1-pole configuration is ideal for protecting a single high-demand 120V circuit, such as dedicated appliances or branch circuits that require strong overcurrent protection without adding a second hot leg.\n- Versatile for multiple install paths: Suitable for service panels, subpanels, or retrofit projects where a bolt-on design is preferred for secure, vibration-resistant mounting. Practical guidance for you (real-world use cases)\n- Replacement workflow: When a panel indicates a need for a 50A, 1-pole, 120V bolt-on breaker, ED21B050 is the straightforward, specification-perfect choice.\n- Retrofit considerations: If you’re upgrading an older circuit or reconfiguring a layout to support a higher-current 120V load, this breaker preserves panel consistency and simplifies future servicing.\n- Compatibility checks: Always confirm fit and ratings with the panel’s labeling and the ED21B050 reference before ordering to avoid mismatches. Installation and precautions\n- Follow the panel manufacturer’s instructions and local electrical codes during installation.\n- Confirm panel labeling and the ED21B050 compatibility to ensure a proper, safe fit.\n- Power down the system and perform a careful, secure bolt-on mounting to establish reliable electrical continuity. In short, the Siemens ED21B050 is a purpose-built, direct-replacement solution for 50A, 120V, single-pole protection in compatible Siemens bolt-on panels, making maintenance, retrofits, and replacements more efficient and reliable.\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46424504402082,"sku":"ED21B050","price":310.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_a085eff1-75dd-47ee-b131-4c8df8f0489b.png?v=1765492976","url":"https:\/\/www.ampstate.com\/products\/siemens-ed21b050-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}