{"product_id":"industrial-21-d137sed","title":"Industrial 21-D137SED Circuit Breaker","description":"\u003cdiv\u003e\n\u003cp\u003eThe Industrial 21-D137SED Circuit Breaker is a reliable, drop-in protective device designed to shield industrial electrical systems from damage caused by overloads and fault conditions. Identified by part number 21-D137SED, this breaker is built to integrate into demanding environments where uninterrupted production and equipment longevity matter.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eWhy this circuit breaker stands out\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic protection\u003c\/strong\u003e combines overload sensing with fast short-circuit interruption, helping prevent motor burnouts, transformer damage, and wiring insulation failure.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDurable, industry-grade construction\u003c\/strong\u003e engineered to withstand vibration, dust, and wide ambient temperatures common in factories, warehouses, and processing plants.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eClear identification and traceability\u003c\/strong\u003e by part number 21-D137SED simplifies procurement, maintenance records, and future replacements, reducing downtime when service is needed.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCompact, panel-ready design\u003c\/strong\u003e designed to fit into standard industrial control panels and switchgear configurations, enabling straightforward upgrades or replacements without extensive rewiring.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCritical protection for diverse loads\u003c\/strong\u003e suitable for motors, conveyors, pumps, transformers, and other energy-intensive equipment common in industrial settings.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eWhat problems it solves\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003ePrevents costly downtime by rapidly disconnecting circuits during overloads or faults.\u003c\/li\u003e \u003cli\u003eProtects wiring insulation and connected equipment from overcurrent events, extending service life and reducing maintenance costs.\u003c\/li\u003e \u003cli\u003eStreamlines replacement scenarios with a clearly identifiable part number, minimizing confusion during inspections or part sourcing.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eIdeal for\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eIndustrial facilities, including manufacturing lines, processing plants, and distribution centers.\u003c\/li\u003e \u003cli\u003eMaintenance teams seeking a dependable replacement part for aging panelboards or switchgear.\u003c\/li\u003e \u003cli\u003eEngineering projects and plant retrofits where proven overload and short-circuit protection is required.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eUsage tips and practical insights\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eVerify compatibility by cross-referencing the 21-D137SED part number with your panel’s voltage, current rating, and interrupting capacity requirements before replacement.\u003c\/li\u003e \u003cli\u003eInspect surrounding wiring and terminal connections during installation to ensure a secure, vibration-resistant fit.\u003c\/li\u003e \u003cli\u003eSchedule periodic functional checks as part of your maintenance plan to confirm reliable tripping performance and mechanical integrity.\u003c\/li\u003e \u003cli\u003eMaintain clear labeling in the electrical cabinet to reflect the 21-D137SED circuit path for faster diagnostics and servicing.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eDesigned for serious industrial use, the Industrial 21-D137SED Circuit Breaker delivers dependable protection, straightforward installation, and long-term value for facilities that depend on steady, safe electrical operation. If you’re upgrading or replacing a critical protection device in your control panel, this part number offers a clear, trustworthy solution that aligns with professional standards and everyday industrial needs.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Industrial","offers":[{"title":"Default Title","offer_id":46423047438498,"sku":"21-D137SED","price":510.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_229276d9-908d-46df-93e5-6fe31866e0ff.png?v=1765492975","url":"https:\/\/www.ampstate.com\/products\/industrial-21-d137sed","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}