{"product_id":"simpson-electric-01297-donut-current-transformer-100a","title":"Simpson Electric 01297 Donut Current Transformer 100A","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SIMPSON ELECTRIC 01297 is a donut-style current transformer designed for use with AC panel meters in electrical metering applications. It accepts 100 amps AC input and steps it down to a standard 5 amp AC output signal, with a 2 VA burden rating and a wide frequency range of 50 to 400 Hz. Connections are made via screw terminals, making it straightforward to integrate into a panel or switchboard metering setup. Licensed electricians and electrical panel technicians are the primary installers of this type of instrument-class transformer.\u003c\/p\u003e\n\u003cp\u003eThis current transformer is used in panel metering installations where an AC ammeter requires a scaled input signal. The donut form factor allows a conductor to pass through the window of the transformer, enabling non-intrusive current sensing in residential, commercial, and light industrial electrical panels. Its wide frequency compatibility makes it suitable for both standard 60 Hz utility power and higher-frequency applications up to 400 Hz, such as those found in marine or aerospace ground-support environments.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e100 amp AC primary input with 5 amp AC secondary output for standard ammeter compatibility\u003c\/li\u003e\n  \u003cli\u003e2 VA burden rating supports typical panel-mounted AC ammeter loads\u003c\/li\u003e\n  \u003cli\u003eFrequency range of 50 to 400 Hz covers standard utility and specialized power systems\u003c\/li\u003e\n  \u003cli\u003eDonut (toroidal window) form factor allows pass-through conductor installation without circuit interruption\u003c\/li\u003e\n  \u003cli\u003eScrew terminal connections for secure, tool-accessible wiring\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with AC ammeters requiring a 5 amp secondary input signal. Suitable as a panel meter accessory in systems where a donut current transformer with screw terminal connections is specified.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation of current transformers must be performed by a licensed electrician in accordance with applicable NEC requirements. De-energize the circuit before threading the primary conductor through the transformer window and making secondary terminal connections. The secondary winding must never be left open-circuited while the primary conductor is energized, as this can produce hazardous voltage. Verify that the ammeter burden does not exceed the 2 VA rating of this transformer before completing the installation.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAC Input Current\u003c\/strong\u003e: 100 amps\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAC Output Current\u003c\/strong\u003e: 5 amps\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBurden Rating\u003c\/strong\u003e: 2 VA\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrequency Range\u003c\/strong\u003e: 50 to 400 Hz\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTerminal Type\u003c\/strong\u003e: Screw\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTransformer Style\u003c\/strong\u003e: Donut (toroidal window)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFor Use With\u003c\/strong\u003e: AC Ammeter\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 1.06 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: SIMPSON ELECTRIC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 01297\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SIMPSON ELECTRIC","offers":[{"title":"Default Title","offer_id":51721131721010,"sku":"01297","price":109.65,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/885a8342bdc8fec0b52d70f52c250a8a.jpg?v=1788574068","url":"https:\/\/voomisupply.com\/products\/simpson-electric-01297-donut-current-transformer-100a","provider":"Voomi Supply","version":"1.0","type":"link"}