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E-T-A 4230T120K0BU1A thermal magnetic circuit breaker

This is a 2-pole thermal magnetic circuit breaker rated for 240VAC and 125VDC, featuring a lever actuator and screw terminals for secure wiring. It is designed for protection applications in electrical systems, ensuring safety and reliability. Compliant with UL 489 standards, it offers high rupture capacity and robust construction for industrial use. Suitable for protecting cables, motors, transformers, and power supplies, it has a current rating range from 1 A to 63 A. Its durable design supports long-lasting operation in various environmental conditions.

Authorized Distributors
Source:DigiKey
Part No:4230-T120-K0BU-1A
Stock:0
Inv Date:06-08-2026
Price: Unit price: $66.13
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Part No:4230-T120-K0BU-1A
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Inv Date:06-09-2026
Price: Unit price: $66.49
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Part No:4230-T120-K0BU-1A
Stock:0
Inv Date:06-08-2026
Price: Unit price: $72.27
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Part No:4230-T120-K0BU-1A
Stock:0
Inv Date:06-08-2026
Price: Unit price: $47.79
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Part No:4230-T120-K0BU-1A
Stock:0
Inv Date:06-08-2026
Price: Unit price: $47.79
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Part No:4230-T120-K0BU-1A
Stock:5
Inv Date:06-08-2026
Price: Unit price: $139.57
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E-T-A 4230T120K0BU1A thermal magnetic circuit breaker Specifications:

  • Number of Poles: 2-pole
  • Rated Voltage: 240V AC, 125V DC
  • Current Rating Range: 1 A to 63 A
  • Rupture Capacity: 10,000 A (UL 489), 7,500 A (IEC/EN 60947-2)
  • Actuator: Lever
  • Terminals: Screw terminals
  • Mounting: DIN rail
  • Dimensions: Approximately 131 g per pole
  • Operating Temperature: -35°C to +70°C
  • Insulation Coordination: 6 KV reinforced insulation
  • Vibration Resistance: +0.38 mm (10-87 Hz), 5g
  • Shock Resistance: 30 g (11 ms)
  • Corrosion Resistance: 96 hrs in 5% salt mist
  • Humidity Resistance: 48 hours at 95% RH, +40°C
  • Degree of Protection: IP20
  • Maximum Busbar Current: 80 A (single-ended), 130 A (center supply)
  • Short Circuit Capacity: 10 kA
  • Tightening Torque: 2 N·m
  • Material: Insulated, reinforced thermoplastic

Buy the Buy Industrial Circuit Breaker Part Number 4230T120K0BU1A Online

Order the Steven Engineering thermal magnetic circuit breaker 4230T120K0BU1A online today. Designed for rigorous industrial use, this 2-pole breaker rated for 240VAC and 125VDC provides reliable overload and short-circuit protection. Its lever actuator allows easy operation, and screw terminals ensure secure wiring connections. Built to meet UL 489 standards, it supports high rupture capacity of 10,000 A, offering long-term safety and durability. Ideal for protecting motors, transformers, and power supplies in demanding electrical environments.

Get Steven Engineering 4230T120K0BU1A today—built for precision and long-lasting durability in industrial electrical protection.

Frequently Asked Questions

Where can I buy E-T-A 4230T120K0BU1A?

You can click on the BUY or RFQ button to purchase 4230T120K0BU1A from an authorized E-T-A distributor.

How do I troubleshoot issues or seek technical support for part 4230T120K0BU1A?

You can download the 4230T120K0BU1A datasheet or visit the E-T-A website for support.

Who is the manufacturer of 4230T120K0BU1A?

E-T-A

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