DC MCCB (≤1000Vdc)

Standard: Compliant with IEC 60947-2

Ratings: M1-M5 frame sizes; up to 1000V DC, 800A; 125A rated current @40℃

Pole Types: 2P / 3P / 4P optional

Breaking Capacity: Icu up to 100kA, Ics=100%Icu; 8kV impulse withstand voltage

Trip Unit: Thermal-magnetic type for overload and short-circuit protection

Features: Mechanical ON/OFF indicator; 50Hz AC test frequency

Application: DC distribution, PV stations, energy storage and industrial DC power systems

Technical Files: TUV/CB certificates, catalogs, manuals and STP 3D drawings

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Product Description
Specification
Product Advantage

Product Description

1. Product Overview

This DC moulded case circuit breaker is designed for DC power distribution systems, equipped with thermal-magnetic tripping unit to offer overload and short-circuit protection. It supports infrequent switching of DC circuits, applicable to photovoltaic energy storage, DC power supply and other DC distribution scenarios.
Compliant with international standard IEC 60947-2.

Specification

2. Main Electrical Ratings

2.1 Rated Operating Voltage (Ue, DC)

• 2-pole: 500 Vdc

• 3-pole: 750 Vdc

• 4-pole: 1000 Vdc (Max DC voltage ≤ 1000V)
AC rated operating voltage: 380/415 V, 690 V

2.2 Rated Operating Current (In)

• Frame sizes: M1 ~ M5

• Maximum rated operating current: 800 A

• Sample rated current: 125 A (reference test specification)

• Ambient temperature reference for rated current: 40°C

2.3 Short-Circuit Breaking Performance

• Rated ultimate short-circuit breaking capacity (Icu): Up to 100 kA

• Rated service short-circuit breaking capacity (Ics) = 100% Icu

• Rated impulse withstand voltage (Uimp): 8 kV

2.4 Pole Configurations

2-pole / 3-pole / 4-pole optional

3. Tripping System

• Tripping type: Thermal-magnetic integrated tripping unit for power distribution

• Thermal trip: For overload protection

• Magnetic trip: For instantaneous short-circuit protection

4. Operating & Environmental Conditions

• Rated frequency for AC testing: 50 Hz

• Standard operating ambient temperature: 40°C

• On/Off mechanical position indicator available

5. Supporting Documents & Drawings

5.1 Certificates

• TUV test certificates for each frame size (M1–M5)

• CB safety certification documents for 2P configurations

5.2 Technical Files

1. Product general catalogue (PDF)

2. Operation & maintenance manual for each frame size (PDF)

3. 3D STP drawing files for all pole combinations (1P/2P/3P/4P per frame M1–M5)

6. Core Product Features

1. Wide DC voltage coverage up to 1000V via different pole combinations

2. High breaking capacity up to 100kA with Ics equal to full Icu

3. Multiple frame sizes covering current range up to 800A

4. Integrated thermal-magnetic trip for dual overload & short-circuit protection

5. Complete supporting technical data: catalogs, manuals, test certificates and 3D engineering drawings

6. Full compliance with IEC 60947-2 low-voltage circuit breaker standard

7. Application Scope

DC power distribution, photovoltaic power stations, energy storage systems, DC UPS, industrial DC power supply and other DC circuit protection occasions.

Product Advantage

1

Wide operating range: 1000V DC max, 800A rating, multi frames and poles available.
2

Superior breaking capacity: Ics=100% Icu, high system operation safety.
3

Dual protection: Thermal-magnetic trip for overload and short-circuit protection.
4

Standard compliant: Fully meets IEC 60947-2 international standard.
5

Wide adaptability: Suitable for PV, energy storage and industrial DC systems.
6

Full technical documents: Complete certificates, manuals and 3D drawings supplied.