Disconnect Switches

Wistex supplies disconnect switches built to meet OSHA lock-out/tag-out requirements while providing safe, reliable isolation for industrial equipment. Choose from fusible, non-fusible, and motor disconnect options up to 2000 A, all available in NEMA 4X and NEMA 12 enclosures for harsh or dusty environments. With rapid shipping and expert guidance, Wistex ensures you get the right switch for the job. Need overcurrent protection? Pair your switch with one of our circuit breakers.

  • SU40NAD11F Noark Control unit, 2500A Frame (A25), fixed type, LSIG protection, Ammeter type (LCD display), 200-240Vac

    SU40NAD11F

    $908.02
    $1,008.91
    Control unit, 2500A Frame (A25), fixed type, LSIG protection, Ammeter type (LCD display), 200-240Vac
  • SU40NHA11DM Noark Control unit, 2500A Frame (A25), Withdrawable type, LSIG protection, 24-30VDC

    SU40NHA11DM

    $1,727.10
    $1,919.00
    Control unit, 2500A Frame (A25), Withdrawable type, LSIG protection, 24-30VDC
  • SU40NHA11FM Noark Control unit, 2500A Frame (A25), fixed type, LSIG protection, 24-30VDC

    SU40NHA11FM

    $1,727.10
    $1,919.00
    Control unit, 2500A Frame (A25), fixed type, LSIG protection, 24-30VDC
  • SU40NHA12DM Noark Control unit, 3200/4000A Frame (A32/A40), Withdrawable type, LSIG protection, 24-30VDC

    SU40NHA12DM

    $1,930.50
    $2,145.00
    Control unit, 3200/4000A Frame (A32/A40), Withdrawable type, LSIG protection, 24-30VDC
  • SU40NHA12FM Noark Control unit, 3200/4000A Frame (A32/A40), fixed type, LSIG protection, 24-30VDC

    SU40NHA12FM

    $1,930.50
    $2,145.00
    Control unit, 3200/4000A Frame (A32/A40), fixed type, LSIG protection, 24-30VDC
  • SU40NHC11DM Noark Control unit, 2500A Frame (A25), Withdrawable type, LSIG protection, 110-130VAC

    SU40NHC11DM

    $1,727.10
    $1,919.00
    Control unit, 2500A Frame (A25), Withdrawable type, LSIG protection, 110-130VAC
  • SU40NHC11FM Noark Control unit, 2500A Frame (A25), fixed type, LSIG protection, 110-130VAC

    SU40NHC11FM

    $1,727.10
    $1,919.00
    Control unit, 2500A Frame (A25), fixed type, LSIG protection, 110-130VAC
  • SU40NHC12DM Noark Control unit, 3200/4000A Frame (A32/A40), Withdrawable type, LSIG protection, 110-130VAC

    SU40NHC12DM

    $1,930.50
    $2,145.00
    Control unit, 3200/4000A Frame (A32/A40), Withdrawable type, LSIG protection, 110-130VAC
  • SU40NHC12FM Noark Control unit, 3200/4000A Frame (A32/A40), fixed type, LSIG protection, 110-130VAC

    SU40NHC12FM

    $1,930.50
    $2,145.00
    Control unit, 3200/4000A Frame (A32/A40), fixed type, LSIG protection, 110-130VAC
  • SU40NHD11DM Noark Control unit, 2500A Frame (A25), Withdrawable type, LSIG protection, 200-240VAC

    SU40NHD11DM

    $1,727.10
    $1,919.00
    Control unit, 2500A Frame (A25), Withdrawable type, LSIG protection, 200-240VAC
  • SU40NHD11FM Noark Control unit, 2500A Frame (A25), fixed type, LSIG protection, 200-240VAC

    SU40NHD11FM

    $1,727.10
    $1,919.00
    Control unit, 2500A Frame (A25), fixed type, LSIG protection, 200-240VAC
  • SU40NHD12DM Noark Control unit, 3200/4000A Frame (A32/A40), Withdrawable type, LSIG protection, 200-240VAC

    SU40NHD12DM

    $1,930.50
    $2,145.00
    Control unit, 3200/4000A Frame (A32/A40), Withdrawable type, LSIG protection, 200-240VAC
  • SU40NHD12FM Noark Control unit, 3200/4000A Frame (A32/A40), fixed type, LSIG protection, 200-240VAC

    SU40NHD12FM

    $1,930.50
    $2,145.00
    Control unit, 3200/4000A Frame (A32/A40), fixed type, LSIG protection, 200-240VAC
  • SU40NMA Noark Control unit, LISG protection, Basic type (LED display), 24VDC, for A32/A40 ACB/ADS

    SU40NMA

    $747.95
    $831.06
    Control unit, LISG protection, Basic type (LED display), 24VDC, for A32/A40 ACB/ADS
  • SU40NMA11D Noark Control unit, 2500A Frame (A25), Drawout type, LSIG protection, Basic type (LED display), 24-30Vdc

    SU40NMA11D

    $635.80
    $706.44
    Control unit, 2500A Frame (A25), Drawout type, LSIG protection, Basic type (LED display), 24-30Vdc
  • SU40NMA11F Noark Control unit, 2500A Frame (A25), fixed type, LSIG protection, Basic type (LED display), 24-30Vdc

    SU40NMA11F

    $635.80
    $706.44
    Control unit, 2500A Frame (A25), fixed type, LSIG protection, Basic type (LED display), 24-30Vdc
  • SU40NMC Noark Control unit, LISG protection, Basic type (LED display), 120VAC, for A32/A40 ACB/ADS

    SU40NMC

    $747.46
    $830.51
    Control unit, LISG protection, Basic type (LED display), 120VAC, for A32/A40 ACB/ADS
  • SU40NMC11D Noark Control unit, 2500A Frame (A25), Drawout type, LSIG protection, Basic type (LED display), 110-130Vac

    SU40NMC11D

    $635.80
    $706.44
    Control unit, 2500A Frame (A25), Drawout type, LSIG protection, Basic type (LED display), 110-130Vac
  • SU40NMC11F Noark Control unit, 2500A Frame (A25), fixed type, LSIG protection, Basic type (LED display), 110-130Vac

    SU40NMC11F

    $635.80
    $706.44
    Control unit, 2500A Frame (A25), fixed type, LSIG protection, Basic type (LED display), 110-130Vac
  • SU40NMD Noark Control unit, LISG protection, Basic type (LED display), 240VAC, for A32/A40 ACB/ADS

    SU40NMD

    $747.46
    $830.51
    Control unit, LISG protection, Basic type (LED display), 240VAC, for A32/A40 ACB/ADS
  • SU40NMD11D Noark Control unit, 2500A Frame (A25), Drawout type, LSIG protection, Basic type (LED display), 200-240Vac

    SU40NMD11D

    $635.80
    $706.44
    Control unit, 2500A Frame (A25), Drawout type, LSIG protection, Basic type (LED display), 200-240Vac
  • SU40NMD11F Noark Control unit, 2500A Frame (A25), fixed type, LSIG protection, Basic type (LED display), 200-240Vac

    SU40NMD11F

    $635.80
    $706.44
    Control unit, 2500A Frame (A25), fixed type, LSIG protection, Basic type (LED display), 200-240Vac
  • UVT21NA Noark MCCB/MCP/MCS Under-Voltage Trip UL 489 , M1, 110-127Vac

    UVT21NA

    $49.17
    $54.63
    MCCB/MCP/MCS Under-Voltage Trip UL 489 , M1, 110-127Vac
  • UVT21NB Noark MCCB/MCP/MCS Under-Voltage Trip UL 489 , M1, 220-240Vac

    UVT21NB

    $49.17
    $54.63
    MCCB/MCP/MCS Under-Voltage Trip UL 489 , M1, 220-240Vac
  • UVT21NC Noark MCCB/MCP/MCS Under-Voltage Trip UL 489 , M1, 380-440Vac

    UVT21NC

    $49.17
    $54.63
    MCCB/MCP/MCS Under-Voltage Trip UL 489 , M1, 380-440Vac
  • UVT21ND Noark MCCB/MCP/MCS Under-Voltage Trip UL 489 , M1, 24-30Vdc

    UVT21ND

    $49.17
    $54.63
    MCCB/MCP/MCS Under-Voltage Trip UL 489 , M1, 24-30Vdc
  • UVT21NE Noark MCCB/MCP/MCS Under-Voltage Trip UL 489 , M1, 48vdc

    UVT21NE

    $49.17
    $54.63
    MCCB/MCP/MCS Under-Voltage Trip UL 489 , M1, 48vdc
  • UVT21NF Noark MCCB/MCP/MCS Under-Voltage Trip UL 489 , M1, 60Vdc

    UVT21NF

    $49.17
    $54.63
    MCCB/MCP/MCS Under-Voltage Trip UL 489 , M1, 60Vdc
  • UVT21NG Noark MCCB/MCP/MCS Under-Voltage Trip UL 489 , M1, 110-125Vdc

    UVT21NG

    $49.17
    $54.63
    MCCB/MCP/MCS Under-Voltage Trip UL 489 , M1, 110-125Vdc
  • UVT21NH Noark MCCB/MCP/MCS Under-Voltage Trip UL 489 , M1, 220-250Vdc

    UVT21NH

    $49.17
    $54.63
    MCCB/MCP/MCS Under-Voltage Trip UL 489 , M1, 220-250Vdc
  • UVT22NA Noark MCCB/MCP/MCS Under-Voltage Trip UL 489 , M2-M3, 110-127Vac

    UVT22NA

    $53.85
    $59.83
    MCCB/MCP/MCS Under-Voltage Trip UL 489 , M2-M3, 110-127Vac
  • UVT22NB Noark MCCB/MCP/MCS Under-Voltage Trip UL 489 , M2-M3, 220-240Vac

    UVT22NB

    $53.85
    $59.83
    MCCB/MCP/MCS Under-Voltage Trip UL 489 , M2-M3, 220-240Vac
  • UVT22NC Noark MCCB/MCP/MCS Under-Voltage Trip UL 489 , M2-M3, 380-440Vac

    UVT22NC

    $53.85
    $59.83
    MCCB/MCP/MCS Under-Voltage Trip UL 489 , M2-M3, 380-440Vac
  • UVT22ND Noark MCCB/MCP/MCS Under-Voltage Trip UL 489 , M2-M3, 24-30Vdc

    UVT22ND

    $53.85
    $59.83
    MCCB/MCP/MCS Under-Voltage Trip UL 489 , M2-M3, 24-30Vdc
  • UVT22NE Noark MCCB/MCP/MCS Under-Voltage Trip UL 489 , M2-M3, 48Vdc

    UVT22NE

    $53.85
    $59.83
    MCCB/MCP/MCS Under-Voltage Trip UL 489 , M2-M3, 48Vdc
  • UVT22NF Noark MCCB/MCP/MCS Under-Voltage Trip UL 489 , M2-M3, 60Vdc

    UVT22NF

    $53.85
    $59.83
    MCCB/MCP/MCS Under-Voltage Trip UL 489 , M2-M3, 60Vdc
  • UVT22NG Noark MCCB/MCP/MCS Under-Voltage Trip UL 489 , M2-M3, 110-125Vdc

    UVT22NG

    $53.85
    $59.83
    MCCB/MCP/MCS Under-Voltage Trip UL 489 , M2-M3, 110-125Vdc
  • UVT22NH Noark MCCB/MCP/MCS Under-Voltage Trip UL 489 , M2-M3, 220-250Vdc

    UVT22NH

    $53.85
    $59.83
    MCCB/MCP/MCS Under-Voltage Trip UL 489 , M2-M3, 220-250Vdc
  • UVT22NJ Noark MCCB Undervoltage Trip, UL489, M2HV 100-127 Vac

    UVT22NJ

    $61.51
    $68.34
    MCCB Undervoltage Trip, UL489, M2HV 100-127 Vac
  • UVT22NK Noark MCCB Undervoltage Trip, UL489 M2HV 220-240 Vac

    UVT22NK

    $61.51
    $68.34
    MCCB Undervoltage Trip, UL489 M2HV 220-240 Vac
  • UVT22NL Noark MCCB Undervoltage Trip, UL489, M2HV 80-440 Vac

    UVT22NL

    $61.51
    $68.34
    MCCB Undervoltage Trip, UL489, M2HV 80-440 Vac
  • UVT22NM Noark MCCB Undervoltage Trip, UL489, M2HV 24-30 Vdc

    UVT22NM

    $61.51
    $68.34
    MCCB Undervoltage Trip, UL489, M2HV 24-30 Vdc
  • UVT22NP Noark MCCB Undervoltage Trip, UL489 M2HV 48 Vdc

    UVT22NP

    $61.51
    $68.34
    MCCB Undervoltage Trip, UL489 M2HV 48 Vdc
  • UVT22NQ Noark MCCB Undervoltage Trip, UL489 M2HV 60 Vdc

    UVT22NQ

    $61.51
    $68.34
    MCCB Undervoltage Trip, UL489 M2HV 60 Vdc
  • UVT22NR Noark MCCB Undervoltage Trip, UL489, M2HV 110-125 Vdc

    UVT22NR

    $61.51
    $68.34
    MCCB Undervoltage Trip, UL489, M2HV 110-125 Vdc
  • UVT22NS Noark MCCB Undervoltage Trip, UL489, M2HV 220-250 Vdc

    UVT22NS

    $61.51
    $68.34
    MCCB Undervoltage Trip, UL489, M2HV 220-250 Vdc
  • UVT24NA Noark MCCB/MCP/MCS Under-Voltage Trip UL 489 , M4/M5, 110-127Vac

    UVT24NA

    $61.42
    $68.24
    MCCB/MCP/MCS Under-Voltage Trip UL 489 , M4/M5, 110-127Vac
  • UVT24NB Noark MCCB/MCP/MCS Under-Voltage Trip UL 489 , M4/M5, 220-240Vac

    UVT24NB

    $61.42
    $68.24
    MCCB/MCP/MCS Under-Voltage Trip UL 489 , M4/M5, 220-240Vac

Disconnect Switches We Offer

Our selection includes trusted brands and enclosure styles to suit virtually any industrial application.

Fusible Safety Switches

Fusible Safety Switches

Fusible disconnects provide short-circuit protection and meet NEC service entrance requirements. Ideal for high SCCR applications, these NF-rated switches accept a variety of fuse classes, including J, R, and H.

Non-Fusible Disconnects

Compact and economical, non-fusible disconnect switches offer a reliable means to manually isolate equipment for maintenance. These are commonly used for motor loads when protection is handled upstream.

Non-Fusible Disconnects
Enclosed Motor Disconnects

Enclosed Motor Disconnects

These all-in-one motor disconnects combine a switch and enclosure, making them ideal for local servicing points on rooftop units, pump panels, or machinery.

Applications for Disconnect Switches

Wistex disconnects are field-proven across a wide range of industrial and commercial systems.

  • HVAC units
  • Machine tools
  • Pump panels
  • Rooftop equipment

Complete your motor control system with contactors and soft starters.

Why Choose Wistex for Safety Disconnects

Wistex is trusted for code-compliant solutions that meet real-world demands. We stock a wide range of fusible and non-fusible disconnect switches, with amperages from 30 A to 2000 A, and enclosure options built for your environment. Our experts can help you build out complete solutions with fuse kits, mounting hardware, and made-in-USA selections, all ready to ship fast.

Disconnect Switch FAQs

Need help choosing or sizing a disconnect switch? Start with these commonly asked questions.

A fusible disconnect switch is typically required when short-circuit protection is needed at the point of service, such as service entrances or fault-current applications. Many local codes also specify fusing for added safety.

To size a switch, multiply your motor's Full Load Amps (FLA) by 115%, consider voltage and phase, and select the correct fuse class. Browse our 30A disconnect switch options or filter by amperage to find your match.

A disconnect switch provides a safe means to isolate power, but unlike a circuit breaker, it does not offer overcurrent protection. Disconnects are ideal for lock-out/tag-out compliance and scheduled maintenance.