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Schneider Electric M9F42120 Circuit Breaker

This is a Schneider Electric thermal magnetic circuit breaker designed for single-pole applications. It supports a current rating of 20 Amps and is suitable for use with 277VAC or 60VDC power supplies. The breaker features a lever actuator, box lug terminals for secure wiring connections, and a C trip curve for tripping characteristics. It complies with UL 489 standards.

Authorized Distributors
Source:Newark
Part No:M9F42120
Stock:5
Inv Date:06-08-2026
Price: Unit price: $84.15
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Source:DigiKey
Part No:M9F42120
Stock:0
Inv Date:06-08-2026
Price: Unit price: $114.11
Buy/RFQ:
Part No:M9F42120
Stock:0
Inv Date:06-09-2026
Price: N/A
Buy/RFQ:
Part No:M9F42120
Stock:90
Inv Date:06-08-2026
Price: Unit price: $90.75
Buy/RFQ:

Schneider Electric M9F42120 Circuit Breaker Specifications:

  • Type: Thermal magnetic circuit breaker
  • Poles: 1P (single-pole)
  • Current rating: 20A
  • Voltage: 277V~ / 60VDC
  • Trip curve: C
  • Terminals: Box lug
  • Standards: UL 489
  • Dimensions: Standard size for circuit breakers
  • Operating temperature: -35°C to +70°C
  • Protection class: IP20
  • Insulation voltage: 500V
  • Rated impulse withstand voltage: 6kV
  • Endurance: 10,000 electrical cycles
  • Weight: 130g

Buy the Buy Schneider Electric Circuit Breaker Part Number M9F42120 Online

Secure your electrical systems with Schneider Electric's 20A thermal magnetic circuit breaker. Easy to install, reliable, and compliant with UL 489 standards, it offers excellent short circuit and overload protection for single-pole applications. Its lever actuator and box lug terminals ensure secure wiring connections, making it ideal for industrial and commercial uses. Experience seamless operation and peace of mind by purchasing this durable and high-quality circuit breaker online today.

Buy Schneider Electric M9F42120 now and experience unmatched reliability and performance in circuit protection.

Frequently Asked Questions

Where can I buy Schneider Electric M9F42120?

You can click on the BUY or RFQ button to purchase M9F42120 from an authorized Schneider Electric distributor.

How do I troubleshoot issues or seek technical support for part M9F42120?

You can download the M9F42120 datasheet or visit the Schneider Electric website for support.

Who is the manufacturer of M9F42120?

Schneider Electric

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