{"product_id":"allen-bradley-1492-sp1c020-bulletin-1492-sp-supplementary-protector","title":"Allen-Bradley 1492-SP1C020 Bulletin 1492-SP Supplementary Protector","description":"\u003cp\u003eConfigured for overcurrent protection in control circuit branches, the \u003cstrong\u003eAllen-Bradley 1492-SP1C020\u003c\/strong\u003e (\u003cstrong\u003e1492-SP1C020\u003c\/strong\u003e Supplementary Protector) provides direct physical\/electrical execution of single-pole circuit interruption under overload and short-circuit conditions.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e1492-SP1C020\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eAllen-Bradley\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.11 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eNot Applicable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Rating\u003c\/td\u003e\n\u003ctd\u003e2 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePoles\u003c\/td\u003e\n\u003ctd\u003e1 Pole\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage Rating\u003c\/td\u003e\n\u003ctd\u003e277 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eProfinet \/ EtherNet\/IP Deterministic Networks\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e1492-SP1C020\u003c\/strong\u003e utilizes a thermal-magnetic mechanism to achieve deterministic interruption of branch circuits. In high-density control architectures, this protector enables precise I\/O density scaling by isolating individual load segments, which prevents localized faults from compromising the stability of broader Profinet or EtherNet\/IP deterministic networks. While this hardware lacks internal network communications, its electrical profile is calibrated for integration within control systems where firmware flash compatibility of adjacent controllers is standard. Users should perform fault current analysis to ensure that branch-level protection coordinates with upstream distribution hardware.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Is this device suitable for motor starting applications?\u003c\/p\u003e\n\u003cp\u003eA: No. As a supplementary protector, this unit is designed for control circuit protection and lacks the specific thermal-magnetic characteristics required for motor branch circuit protection under standard industrial codes.\u003c\/p\u003e\n\u003cp\u003eQ: Can this 1-pole protector be used in 277 VAC single-phase circuits?\u003c\/p\u003e\n\u003cp\u003eA: Yes, provided the circuit configuration is compatible with a single-pole interruption mechanism and the fault current does not exceed the component's interrupt rating.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eMount the unit onto a standard 35 mm DIN rail; ensure the base latching mechanism is fully engaged to maintain mechanical stability during panel vibration.\u003c\/li\u003e\n\u003cli\u003eTerminate line-side power connections at the upper terminals and load-side conductors at the lower terminals.\u003c\/li\u003e\n\u003cli\u003eObserve correct wire stripping lengths to ensure full engagement within the clamp terminals without exposing bare copper beyond the terminal housing.\u003c\/li\u003e\n\u003cli\u003eSeparate the protected control circuit wiring from high-voltage power lines or VFD output cabling to minimize induced electromagnetic interference.\u003c\/li\u003e\n\u003cli\u003eVerify circuit continuity with a multimeter in the de-energized state before applying power.\u003c\/li\u003e\n\u003cli\u003ePeriodically verify terminal torque to maintain low-impedance electrical contact, preventing thermal degradation of the connection point.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":52927544099125,"sku":"1492-SP1C020","price":66.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/7630\/5461\/files\/1492-SP1C030_2aeccf15-36e2-4a47-93cd-ccfe8640c45d.png?v=1779865252","url":"https:\/\/www.5gplc.com\/products\/allen-bradley-1492-sp1c020-bulletin-1492-sp-supplementary-protector","provider":"High Five PLC Solution Limited","version":"1.0","type":"link"}