Eaton Photovoltaic DC String Box 1x IN+1x OUT PKZ-SOL SPD Type 2 MC4 (EP-501984)

With a maximum system voltage of 1000 V DC and a current rating of 32 A per string, this Eaton DC string box is built for demanding photovoltaic installations. The integrated PKZ-SOL circuit breaker provides overcurrent protection and a DC disconnect function, while the Type 2 surge protective device guards against transient overvoltages.

Overview

The EP-501984 is a wall-mounted DC string box designed for photovoltaic systems. It combines one input and one output string with MC4 connectors, simplifying array wiring and protection. The enclosure is made from UV-resistant polycarbonate and rated IP65, making it suitable for outdoor use.

What stands out

• Integrated PKZ-SOL DC circuit breaker with 10 kA short-circuit breaking capacity
• Type 2 surge protection with voltage protection level below 4.0 kV
• MC4 connectors for quick, secure PV string connections
• IP65 enclosure for reliable outdoor operation
• Operating temperature range from -25°C to +50°C

Technical details

• Number of inputs: 1 string
• Number of outputs: 1 string
• Max. system voltage: 1000 V DC
• Max. current per string: 32 A
• Short-circuit breaking capacity: 10 kA
• DC disconnect function: Yes (via PKZ-SOL)
• Surge protection: Type 2
• Voltage protection level: < 4.0 kV
• Enclosure material: UV-resistant polycarbonate
• Protection rating: IP65
• Mounting: Wall

Our verdict

A compact and robust DC string box that combines overcurrent protection, surge protection, and disconnect functionality in a single IP65 enclosure—ideal for small to medium PV systems.