China OFDL Series 2P Miniature Circuit Breaker Manufacturers, Manufacturer

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China OFDL Series 2P Miniature Circuit Breaker Manufacturers, Manufacturer

The OFDL 2P (two-pole) miniature circuit breaker is specifically designed for single-phase AC distribution systems and is an all-pole protection device capable of simultaneously disconnecting all live conductors. Its internal mechanical interlock structure ensures forced synchronous disconnection of the phase line (L) and the neutral line (N), providing not only precise overload and short-circuit protection but also complete electrical isolation of the circuit. This fundamentally eliminates the safety risk where the neutral conductor may remain energized when only the phase line is disconnected. The product is a key component for improving the operational and maintenance safety level of single-phase circuits and meeting stringent isolation specifications.

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Related Products

OFDL 3P Miniature Circuit Breaker

OFDL Series 1P Miniature Circuit Breaker

OFDL Series 4P Miniature Circuit Breaker

Frequently Asked Questions

Q1 What is the difference between 1P, 3P, and 4P Miniature Circuit Breakers?

1P MCBs switch and protect a single phase line. 3P MCBs protect three-phase power lines without a neutral line, ideal for motor loads. 4P MCBs protect three phases along with a switched neutral line for complete system isolation.

Q2 What are the primary functions of the OFDL Series Miniature Circuit Breaker?

The OFDL series provides essential overload and short-circuit protection for electrical circuits, safeguarding sensitive equipment and wiring against standard thermal and magnetic overcurrent hazards.

Q3 How do I select the right pole configuration for my circuit?

Choose 1P for standard single-phase residential branch circuits, 3P for typical three-phase industrial motors or machinery, and 4P when full neutral disconnection is required for main input distribution boxes.

Q4 Can these circuit breakers be installed in standard distribution boards?

Yes, OFDL series miniature circuit breakers feature standard DIN-rail mounting design, making them compatible with standard distribution panels and consumer units.

Q5 How does the thermal-magnetic trip mechanism protect electrical systems?

The thermal mechanism uses a bimetallic strip to trip the circuit during prolonged overloads, while the electromagnetic coil instantly trips the switch during high-current short circuits for maximum protection speed.