Modular solar power system circuit breaker 4P | 32A | 1200VDC | IP66 | DIN

Technical Specifications:

Nominal voltage (Ui): 1500 V DC

Operating voltage: up to 1200 V DC

Rated current (Ithe): 32 A at +40 °C; 29 A at +60 °C

Poles: 4-pole (4P)

Mounting: 35 mm DIN rail

Control: External rotary handle

Protection class: IP66 (dust and water resistant)

Temperature range: from -40 °C to +85 °C

Contact material: Silver alloy (low resistance, oxidation and high temperature resistant)

Insulation: Flame-resistant nylon housing material

Standards: IEC/EN60947-3, AS60947-3

Surge withstand (Uimp): 8 kV

Polarity: No polarity (more flexible connection)

Functions:

Safe manual DC circuit disconnection in solar systems

Quick and reliable DIN rail mounting

Withstands high temperature and humidity

Rotary handle ensures easy control

Suitable for both single and multiple circuit disconnection

Usage:

In solar power plants (residential or industrial)

Disconnecting solar inverters from modules for field work

For maintenance or system testing

Emergency disconnection to avoid electric shock risk

In outdoor and indoor panels with DIN rail

Pros:

Suitable for use in extreme climate conditions (-40 °C / +85 °C)

Due to IP66 – resistant to moisture, dust

Silver alloy contacts ensure low resistance and durability

Clear disconnection status – safer during operation

Easy installation in DIN rail systems

Meets international safety and reliability standards

Cons:

Not suitable for AC current switching – only DC (direct current)

May be difficult to use without technical knowledge – professional installation recommended

A solar circuit breaker is an essential and reliable solution for both residential and industrial solar systems when a clear and safe DC circuit disconnection is required. Due to its resistance to environmental influences, compliance with high safety standards, and durability, this switch is one of the most important components to ensure both user safety and smooth system operation.