{"product_id":"bender-rcms490-residual-current-evaluator-module","title":"Bender RCMS490 Residual Current Evaluator Module","description":"\u003cdiv\u003e\u003cp\u003eLINETRAXX RCMS490 residual current evaluator module is a multichannel residual current monitor designed to detect, evaluate and respond to fault, residual, and operating currents in earthed TN-S and TT power systems via external measuring current transformers. The RCMS490-D variant provides one alarm contact per channel, enabling local signaling or disconnection, while the RCMS490-L variant offers a seven-segment display for direct readout. For AC\/DC sensitive (Type B) measurements, closed CTBS25 or CTUB100 series transformers are required and powered from a 24 V DC supply (e.g., STEP-PS); measurements can be configured per channel to be AC, pulsating DC, or AC\/DC sensitive. The device analyzes harmonics, DC components, and THF with an adjustable frequency response for fire and plant protection, and data can be exchanged via a BMS bus; it is RoHS compliant. Typical applications include monitoring residual, fault and rated currents across installations up to 0–2000 Hz (CTUB100\/CTBS25) or 42–2000 Hz (CTAC\/WR\/WS\/WF), EMC monitoring in TN-S systems, and verification of PE\/N conductor conditions to support safety and maintenance planning.\u003c\/p\u003e\u003c\/div\u003e","brand":"Bender","offers":[{"title":"Used Surplus - Excellent Condition","offer_id":51676882207022,"sku":null,"price":274.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0818\/1038\/files\/Ebay_website_image_176c919f-0f2b-46e3-8553-6f3418beb7e2.jpg?v=1769554736","url":"https:\/\/plgautomation.com\/products\/bender-rcms490-residual-current-evaluator-module","provider":"PLG Automation ","version":"1.0","type":"link"}