DC Combiner Box 1 In 1 Out & 2 In 2 Out | Solar PV String Protection & Isolation

The DC Combiner Box 1 In 1 Out and 2 In 2 Out is designed for residential and commercial solar PV installations, providing safe DC string protection, isolation, and surge protection for photovoltaic systems up to 1000V DC. Engineered for reliability and long-term performance, these combiner boxes simplify solar wiring, protect critical system components, and enhance maintenance safety.

Built with integrated DC switch disconnectors, DC fuses, and Type 2 DC surge protection devices, the combiner box safeguards solar panels, DC cables, and inverters against overcurrent and transient voltage surges. The robust IP65-rated enclosure offers excellent protection against dust, water, and harsh outdoor environments, making it ideal for rooftop and ground-mounted solar installations.

Key Features

• Available in 1 In 1 Out and 2 In 2 Out configurations
• Rated for up to 1000V DC photovoltaic systems
• Integrated DC isolator switch for safe maintenance and emergency shutdown
• Type 2 DC surge protection device (SPD) for lightning and surge protection
• DC fuse protection for enhanced system safety
• IP65 weatherproof enclosure for outdoor installation
• High-impact IK10-rated housing
• UV-resistant Polycarbonate/ABS enclosure
• Suitable for residential, commercial, and industrial solar applications
• Simplifies PV string connection and system monitoring
• Wall-mounted design for easy installation

Technical Specifications

DC Combiner Box 1 In 1 Out (PEJB-1-1)

• Input: 1 PV String
• Output: 1 PV String
• Maximum Voltage: 600V DC
• Maximum Current: 25A
• DC Isolator Rating: 25A
• Enclosure Size: 219 × 200 × 100 mm
• Protection Rating: IP65
• Impact Resistance: IK10

DC Combiner Box 2 In 2 Out (PEJB-2-2)

• Input: 2 PV Strings
• Output: 2 PV Strings
• Maximum Voltage: 1000V DC
• Maximum Current Output: 50A
• Maximum Short Circuit Current per Input: 25A
• DC Isolator Rating: 50A
• Enclosure Size: 296 × 230 × 120 mm
• Protection Rating: IP65
• Impact Resistance: IK10

Included Protection Components

• DC Switch Disconnector
• Type 2 DC Surge Arrester
• DC Fuse Holders with 10×38 mm Fuse Links
• UV-Resistant Weatherproof Enclosure

Applications

• Residential rooftop solar systems
• Commercial and industrial PV installations
• Solar battery charging systems
• Off-grid solar power systems
• Grid-tied photovoltaic systems
• Solar farms and distributed energy projects

Why Choose This DC Combiner Box?

This solar DC combiner box provides a professional and compliant solution for photovoltaic string management, offering superior protection, simplified installation, and reliable long-term operation. With integrated surge protection, fuse protection, and DC isolation, it helps maximise system safety while reducing maintenance complexity for solar installers and system owners.