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    Relays

    Fan Safety Alram Circuit

    Fan Safety Alram Circuit are simply devices that combine a common relay-logic function into a small, easy-to-install, and less expensive form.

    Overview

    Fan Safety Alram Circuit are simply devices that combine a common relay-logic function into a small, easy-to-install, and less expensive form.

    A master relay will open if any one of the normally-closed (N/C) inputs open. There are six, four, or two inputs depending on the model chosen. LED status of all inputs, the master relay, and power input is provided. Bypass of un-used inputs is also provided. The RIBMNLB series is provided with mounting track for mounting in user-provided electrical enclosures. The master relay has two general-purpose outputs: both can be jumper selected at 24 V (sourced from input) or dry contact. The most common application is an Air Handling Unit (AHU) fan-safety-shutdown where the master relay is used to shut down the fan. Contact closure outputs are provided so that a DDC controller can determine the cause of a shutdown.

    Certifications:
    • UL
    • Made in USA
    Product Number
    Part Number
    Description
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    RIBMNLB
    Fan Safety Alram Circuit, Track Mount Logic Board
    RIBMNLB
    Fan Safety Alram Circuit, Track Mount Logic Board
    RIBMNLB-1
    Fan Safety Alram Circuit, 2.75in, 1 Normally Closed Input, MT212-4 Track
    RIBMNLB-1
    Fan Safety Alram Circuit, 2.75in, 1 Normally Closed Input, MT212-4 Track
    RIBMNLB-2
    Fan Safety Alram Circuit, 2.75in, 2 Normally Closed Input, MT212-4 Track
    RIBMNLB-2
    Fan Safety Alram Circuit, 2.75in, 2 Normally Closed Input, MT212-4 Track
    RIBMNLB-2NO
    Fan Safety Alram Circuit, 2.75in, 2 NO Input, MT212-4 Track
    RIBMNLB-2NO
    Fan Safety Alram Circuit, 2.75in, 2 NO Input, MT212-4 Track
    RIBMNLB-4
    Fan Safety Alram Circuit, 2.75in, 4 Normally Closed Input, MT212-4 Track
    RIBMNLB-4
    Fan Safety Alram Circuit, 2.75in, 4 Normally Closed Input, MT212-4 Track
    RIBMNLB-4NO
    Fan Safety Alram Circuit, 2.75in, 4 NO Input, MT212-4 Track
    RIBMNLB-4NO
    Fan Safety Alram Circuit, 2.75in, 4 NO Input, MT212-4 Track
    RIBMNLB-6
    Fan Safety Alram Circuit, 2.75in, 6 Normally Closed Input, MT212-4 Track
    RIBMNLB-6
    Fan Safety Alram Circuit, 2.75in, 6 Normally Closed Input, MT212-4 Track
    RIBMNLB-6NO
    Fan Safety Alram Circuit, 2.75in, 6 NO Input, MT212-4 Track
    RIBMNLB-6NO
    Fan Safety Alram Circuit, 2.75in, 6 NO Input, MT212-4 Track