{"product_id":"siemens-ed43b090-90a-480v-3-pole-bolt-on-circuit-breaker","title":"Siemens ED43B090 - 90 A, 480 V, 3-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003eSiemens ED43B090 is a 90A, 480V, 3-pole bolt-on molded-case circuit breaker engineered to deliver dependable branch-circuit protection in panelboards and loadcenters. Built for rugged reliability, its bolt-on mounting creates a solid, vibration-resistant bus connection that stays secure even in demanding commercial and industrial environments. The thermal-magnetic trip unit provides stable, repeatable protection—quickly responding to overloads and short circuits to minimize damage and downtime. Key advantages\n- Secure bolt-on mounting: A rigid connection to the bus reduces loosening from vibration or movement, helping maintain consistent protection over time.\n- Thermal-magnetic trip: Combines thermal and magnetic sensing for accurate, dependable clearing of overloads and short circuits across a wide range of fault conditions.\n- OEM-compatible design: Engineered to pair with matching Siemens OEM loadcenters and panelboards for straightforward retrofits and new installations.\n- Versatile applications: Suitable for residential, commercial, and light industrial panels, especially in 3-phase 480V distributions. Technical specifications\n- Manufacturer: Siemens\n- Part Number: ED43B090\n- Type: Thermal-magnetic molded case circuit breaker\n- Amperage Rating: 90A\n- Voltage Rating: 480V\n- Number of Poles: 3\n- Mounting Style: Bolt-on\n- Application: Branch circuit overcurrent and short-circuit protection Ideal use scenarios\n- Upgrading electrical panels in commercial buildings where 3-phase 480V services are standard\n- Replacing or expanding protection in panelboards within small to mid-size industrial setups\n- Implementing reliable protection for HVAC equipment, large motor loads, and other high-current 3-phase circuits\n- Retrofit projects that require a secure, vibration-resistant connection and OEM-compatible form factor What you gain with Siemens ED43B090\n- Peace of mind from precise, repeatable protection in challenging environments\n- A robust mounting solution that reduces maintenance concerns and connection drift\n- A proven, OEM-aligned component that simplifies compatibility and stocking for electricians and technicians If you’re sourcing a dependable 3-pole bolt-on breaker for 480V systems, the Siemens ED43B090 delivers precise protection, durable mounting, and OEM compatibility to keep commercial and light industrial electrical systems running smoothly.\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349790183586,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/siemens_breaker_and_panel_533df268-9bd8-4000-8309-001794a74261.png?v=1764156839","url":"https:\/\/www.ampstate.com\/products\/siemens-ed43b090-90a-480v-3-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}