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MiniPurge Interface Units

Hazardous area installations of purge & pressurized enclosures generally require some form of external alarm or power interlocking, depending on Zone or Division of installation. We offer a range of MIUs (MiniPurge Interface Units) to enable clients to meet these requirements and also to provide additional alarms or signal interfaces where specified. As standard, MIUs are available to conform with European, International, North American, and Brazilian standards and are certified to ATEX, IECEx, cULus and INMETRO - others are available to order. The MIU series generally interfaces with the Pneumatic Output (/PO) version of the MiniPurge and is provided as an externally-mounted explosionproof or flameproof box, fitted with pneumatic relays, pressure switches and MCB's to suit individual application requirements.

  • MIU AMU/9AA1-510-511

    MiniPurge Interface Unit AMU/9AA1-510 & 511

    Power Interlocking Device. Isolate power entering pressurized enclosure. With pneumatic relay, isolate 4 poles 16 amps & control remote alarm via microswitch & terminalsAMU 9AA1 510 & 511
    Type AMU/9AA1-510 Power Interlocking Device
    Power Switching 4PNO/12A/300Vac UL 4PNO/20A/440Vac(IEC-AC1) 4PNO/16A/440Vac(IEC-AC1) 110V coil
    Alarm Switching Volt Free/Dry Contact 3A/250Vac SPCO
    Signal Switching Entries N/A
    Entries 3x 1/2″ NPT
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  • MIU AMU/AAA1-610

    MiniPurge Interface Unit AMU/AAA1-610

    Power Interlocking Device. Isolate power entering pressurized enclosure. With a pair of pneumatic relays, isolate 4 pole 16 amp input current, 4 pole 5 amp signal current, Control a remote alarm, connected via terminals to an internal micro-switchAMU AAA1 610
    Type AMU/AAA1-610 Power Interlocking Device
    Power Switching 4PNO/12A/300Vac UL
    4PNO/20A/440Vac(IEC-AC1)
    4PNO/16A/440Vac(IEC-AC1)
    110V coil
    Alarm Switching Volt Free, Dry Contact 3A/250Vac SPCO
    Signal Switching Entries 4PNO/5A/250Vac(AC1)
    Entries 6x 1/2″ NPT
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  • MIU AMU/BAA1-610

    MiniPurge Interface Unit AMU/BAA1-610

    Power Interlocking Device. Isolate power entering pressurized enclosure. With a pair of pneumatic relays, isolate 4 pole 35 amp input current, 4 pole 5 amp signal current, Control a remote alarm, connected via terminals to an internal micro-switchAMU BAA1 610
    Type AMU/BAA1-610 Power Interlocking Device
    Power Switching 4PNO/35A/300Vac(UL)
    4PNO/40A/690Vac(IEC-AC1) for T6(-20°<Tamb<+40°C)
    4PNO/40A/440Vac(IEC-AC1) for T5(-20°<Tamb<+55°C)
    Alarm Switching Volt Free, Dry Contact 3A/250Vac SPCO
    Signal Switching Entries 4PNO/5A/250Vac(AC1)
    Entries 4x 1/2″ NPT and 2x 3/4″ NPT
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