DC MCB (≤720Vdc)

Type & Standard: Non-polarized PV DC MCB, IEC/EN 60947-2 compliant

Specifications: 720Vdc, ≤63A, 10kA breaking capacity, K curve, 4kV withstand voltage, Cat A, Pollution Degree 3

Installation: 1P-4P optional, 35mm DIN rail mount, compatible with full accessories

Function: DC overload and short-circuit protection

Application: PV, energy storage and off-grid DC systems

Certification: Complete TUV/SAA certificates, drawings and manuals provided

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Product Description
Specification
Product Advantage

Product Description

1. Product Overview

Non-polarized DC miniature circuit breaker designed for photovoltaic (PV) DC circuit protection, compliant with global IEC/EN standards for DC low-voltage switchgear. Suitable for solar array combiner boxes, inverter DC input circuits and other renewable energy DC distribution systems.

Specification

2. Core Electrical Technical Parameters

Parameter	Specification
Max. Total Rated DC Voltage	720 Vdc
Rated Operating Voltage per Pole (Ue)	180 V DC
Rated Impulse Withstand Voltage (Uimp)	4 kV
Rated Short-Circuit Breaking Capacity (Icu = Ics)	10 kA
Trip Characteristic	K Curve
Rated Current Range	Up to 63 A
Utilization Category	Cat A
Pollution Degree	Degree 3
Polarity Design	Non-polarized (no positive/negative wiring restriction)
Applicable Standard	IEC / EN 60947-2

3. Mechanical & Installation Specifications

1. Module Width Options: 2 modules, 4 modules per pole unit

2. Mounting: Standard 35mm DIN rail mounting

3. Pole Configurations: 1P / 2P / 3P / 4P available

4. Function: Dual thermal-magnetic protection for overload and short-circuit fault; capable of infrequent circuit switching under normal operating conditions

5. Expandability: Supports full range of compatible auxiliary accessories (auxiliary contact, shunt trip, under-voltage release etc.)

4. Test & Certification Documents Package

Full supporting technical files provided for engineering review and certification submission:

1. Product General Catalogue (PDF)

2. Third-party safety test certificates (TUV, SAA standard certification documents)

3. Multi-pole 3D mechanical drawing files (STP format for 1P/2P/3P/4P)

4. Full operation & installation user manual (PDF)

5. Application Scope

• Photovoltaic solar power generation DC side circuit protection

• Energy storage low-voltage DC distribution loop protection

• Off-grid DC power supply system overload & short-circuit protection

6. Key Product Advantages

1. Non-polarized wiring design, simplifies on-site PV wiring construction

2. High 10kA short-circuit breaking capacity, reliable for high-fault-current PV arrays

3. K-type tripping curve, optimized for DC solar system surge current characteristics

4. High insulation and impulse withstand voltage, strong anti-interference performance under outdoor complex environment

5. Modular compact structure, flexible combination with various electrical accessories

6. Full set of standardized certification and drawing documents to support global project tender and product approval

7. Compliance Notes

All performance tests are fully executed in accordance with IEC/EN 60947-2 low-voltage switchgear and control gear standard, with complete third-party certification records for international market access.