CHINT NB1-63DC C20A 20A 2P 500V DC Circuit Breaker

Product Identification

Product Title

CHINT NB1-63DC C20A 20A 2P 500V DC Circuit Breaker

Short Description

The CHINT NB1-63DC C20A is a two-pole, 20A DC circuit breaker designed to protect photovoltaic, energy-storage, telecom and other DC distribution circuits against overload and short-circuit faults. The verified 2P version is rated at DC500V with a 6kA ultimate short-circuit breaking capacity and a Type C tripping characteristic.

Long Description

Protect critical DC circuits with the CHINT NB1-63DC C20A two-pole circuit breaker. Designed for demanding direct-current applications, this compact protective device combines thermal-magnetic overload and short-circuit protection with reliable switching in a DIN-rail format.

The exact C20A configuration carries 20A rated current, uses two poles and is rated for DC500V operation. Its C-curve characteristic operates at 7–10 times rated current for instantaneous magnetic tripping, while the 6kA breaking capacity supports dependable interruption of fault current within the stated system limits.

The NB1-63DC series supports cable or busbar connection, contact-position indication and DIN-rail installation. Because the device is polarity-sensitive, the positive and negative conductors must be connected exactly according to the markings and official wiring diagram. Final breaker selection must be coordinated with system voltage, cable capacity, equipment requirements and prospective short-circuit current by a qualified electrical professional.

Key Features

• 20A rated current in the verified C20A configuration

• Two-pole DC circuit interruption

• DC500V rated operating voltage for the 2P version

• 6kA ultimate short-circuit breaking capacity

• Type C instantaneous tripping characteristic, 7–10 × In

• Overload and short-circuit protection

• Contact ON/OFF position indication

• Cable and busbar dual-connection capability

• Up to 25mm² conductor capacity

• 35mm DIN-rail mounting

• IP20 protection degree

• IEC/EN 60947-2 and RoHS compliance

Technical Specifications

Applications

• Solar photovoltaic DC arrays and distribution

• PV combiner boxes

• DC-side inverter protection

• Battery-energy-storage DC distribution

• EV charging DC auxiliary circuits within verified ratings

• Telecom DC power networks

• Commercial and industrial DC distribution panels

Box Contents

Not Verified. CHINT's official product page and catalogue do not specify the retail package contents for this exact ordering variant.

Protection Features

• Thermal overload protection

• Magnetic short-circuit protection

• 6kA fault-current interruption

• Simultaneous two-pole switching

• Contact ON/OFF indication

• Polarity markings for correct DC connection

• IP20 enclosure protection under applicable test conditions

Certifications

Warranty

Not Verified for this exact NB1-63DC C20A retail variant. Confirm the applicable warranty period and Pakistan claim procedure with the authorized supplier before publishing a warranty promise.