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Used automated in South Carolina, USA

  • Siemens 5SY63 MCB D32 Circuit

    Siemens 5SY63 MCB D32 Circuit Breaker. 4C-21

    • Manufacturer: Siemens

    Siemens 5SY63 MCB D32 Circuit Breaker. 4C-21 We repair all types of industrial automation including AC Servo Drives, Servo Motors, Operator Interface Panels, PLC's, Sensors, Process Controls and Timers. Palmet...

    $35 USD
    Duncan, SC
  • EATON WMS2D10 10A 2-Pole Miniature

    EATON WMS2D10 10A 2-Pole Miniature Circuit Breaker. Loc 4A-22

    • Manufacturer: Eaton

    EATON WMS2D10 10A 2-Pole Miniature Circuit Breaker. Loc 4A-22 We repair all types of industrial automation including AC Servo Drives, Servo Motors, Operator Interface Panels, PLC's, Sensors, Process Controls and...

    $22 USD
    Duncan, SC
  • Siemens 5SY63 MCB D4 Circuit

    Siemens 5SY63 MCB D4 Circuit Breaker. 4C-17

    • Manufacturer: Siemens

    Siemens 5SY63 MCB D4 Circuit Breaker. 4C-17 We repair all types of industrial automation including AC Servo Drives, Servo Motors, Operator Interface Panels, PLC's, Sensors, Process Controls and Timers. Palmetto A...

    $48 USD
    Duncan, SC
  • Siemens 5SY63 MCB D25 Circuit

    Siemens 5SY63 MCB D25 Circuit Breaker. 4C-19

    • Manufacturer: Siemens

    Siemens 5SY63 MCB D25 Circuit Breaker. 4C-19 We repair all types of industrial automation including AC Servo Drives, Servo Motors, Operator Interface Panels, PLC's, Sensors, Process Controls and Timers. Palmet...

    $28 USD
    Duncan, SC
  • Siemens 5SY63 MCB D32 3-Pole

    Siemens 5SY63 MCB D32 3-Pole Circuit Breaker. 4C-20

    • Manufacturer: Siemens

    Siemens 5SY63 MCB D32 3-Pole Circuit Breaker. B4C-20 We repair all types of industrial automation including AC Servo Drives, Servo Motors, Operator Interface Panels, PLC's, Sensors, Process Controls and Timer...

    $34 USD
    Duncan, SC
  • Eaton FAZ-C10/1-NA-SP EN/IEC 10 A,

    Eaton FAZ-C10/1-NA-SP EN/IEC 10 A, 277/480V AC Circuit Breaker. 4E-7

    • Manufacturer: Eaton

    Eaton FAZ-C10/1-NA-SP EN/IEC 10 A, 277/480V AC Circuit Breaker. OEM spares from a brewery/ bottling plant maintenance room's canceled expansion project tool crib. We repair all types of industrial automation incl...

    $63 USD
    Duncan, SC
  • Siemens 5SY4316-7 16-Amp 3 Pole

    Siemens 5SY4316-7 16-Amp 3 Pole 400 V Circuit Breaker 5SY43 MCB. Loc 4B

    • Manufacturer: Siemens

    Siemens 5SY4316-7 16 Amp 3 Pole 400 V Circuit Breaker 5SY43 MCB. Loc.4B New no box maintenance room spares and/or new liquidated machine take offs. May have minor scuffs or scratches when they were taken from sto...

    $79 USD
    Duncan, SC
  • ABB S203-C16 2CDS253001R0164 3P Miniature

    ABB S203-C16 2CDS253001R0164 3P Miniature Circuit Breaker 4E-48

    • Manufacturer: ABB

    Palmetto Automation Inc. of Duncan SC specializes in buying, selling, and repairing obsolete Used, Refurbished, and New industrial electronic equipment. Most of our used equipment goes through basic power bench t...

    $23 USD
    Duncan, SC
12

Overview

Miniature circuit breakers (MCBs) are compact protective switches that interrupt electrical flow in low‑voltage circuits when overloads or short circuits occur. Widely used in residential, commercial and light industrial panels, they offer resettable protection and come in single‑ to multi‑pole versions, various current ratings, breaking capacities and trip curves. MCBs typically mount on DIN rails and use thermal‑magnetic mechanisms; select units that match local standards, busbar size and application requirements.

FAQ

What should I check when buying an MCB?

Verify the nominal current (In), breaking capacity (kA), trip curve (B, C, D), number of poles, mounting type (DIN rail), and compliance with local standards (IEC/UL). Check physical condition, brand reputation and whether spare parts or datasheets are available.

How should MCBs be packed and shipped safely?

Ship in original or padded boxes to protect terminals and housing. Secure against moisture and vibration, label fragile electrical components, and use a carrier familiar with electrical goods. Include compliance certificates for customs if shipping internationally.

What routine maintenance or testing do MCBs need?

Perform visual inspections, tighten terminal connections to torque specs, cycle switches periodically, and conduct insulation and trip tests with appropriate equipment. Replace units showing overheating, physical damage, or inconsistent trips.