TOMZN TOB7Z-63 20A 2P 1000V DC Solar MCB

TOMZN TOB7Z-63 20A 2P 1000V DC Solar PV Circuit Breaker

The TOMZN TOB7Z-63 is a 2-pole DC Miniature Circuit Breaker designed specifically for DC electrical protection applications such as solar PV systems and DC distribution circuits.

With a 20A rated current and 1000V DC rated voltage, this MCB provides protection against electrical faults including overload and short circuits. Its 2-pole configuration allows both DC conductors to be disconnected together, making it suitable for appropriately designed PV protection circuits.

The breaker uses a thermal-magnetic C-curve tripping characteristic and provides a reported 6kA breaking capacity. Its compact design supports installation on a standard 35mm DIN rail, making it convenient for solar distribution boxes and DC protection enclosures.

Key Features

• Brand: TOMZN

• Model: TOB7Z-63

• Rated Current: 20A

• Rated Voltage: 1000V DC

• Poles: 2P

• Breaking Capacity: 6kA

• Tripping Characteristic: C Curve

• Thermal-Magnetic Protection

• Overload & Short-Circuit Protection

• 35mm DIN Rail Mounting

• IP20 Protection

• Suitable for Solar PV/DC Protection

Ideal Applications

• Solar PV string protection

• Solar DC distribution

• PV combiner boxes

• Solar inverter DC protection

• DC electrical distribution systems

• Appropriately designed battery/DC circuits

Important: This is a DC-rated MCB. It should not be substituted with an ordinary AC MCB in a solar PV DC circuit unless the specific device is explicitly rated and approved for that DC application.

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