PCB Socket T1 and T2 PV
Raycap PCB Socket T1 and T2 PV are single-pole SPD socket bases mounted by direct soldering onto printed circuit boards (PCBs). They provide integrated surge protection for string boxes and inverter boards in photovoltaic systems up to 750 V DC (UCPV).
The Raycap PCB Socket series is a socket base solution developed for integrating surge protection directly onto a device's electronic board. By soldering the SPD directly onto the PCB instead of positioning it as a separate DIN rail module, it reduces both installation costs and panel space requirements.
The solution is designed for use with PV modules having a maximum continuous operating voltage (UCPV) of up to 750 V DC. Two options are available:
- PCB Socket T1 PV — Class I+II / Type 1+2: for installations at risk of direct lightning strikes, capable of carrying a partial lightning current. Iimp 6.25 kA (10/350 µs), ITotal 12.5 kA.
- PCB Socket T2 PV — Class II / Type 2: protection against induced and switching surges. In 20 kA, Imax 40 kA (8/20 µs).
Both versions are available with the -R (with remote signaling contact) option, allowing the module's fault status to be transmitted to a SCADA or monitoring system. The green / not-green fault indicator on the front simplifies on-site inspection, and the module locking mechanism prevents the protection module from dislodging in vibrating conditions.
The products comply with IEC 61643-31:2018, EN 61643-31:2019, and UL 1449 5th Edition standards, targeting both European and US markets. The housing material is UL 94 V-0 flame-retardant thermoplastic.
- Compact profile for PCB mounting
- For use with PV modules up to 750 V DC UCPV
- Single-pole; protection mode: (+)-PE, (-)-PE, (+)-(-)
- Double solder pads for mechanical strength
- Two additional mechanical fixing holes (Ø3.2 mm)
- Voltage indicator socket
- Module locking mechanism
- Vibration and shock resistance
- Precise and reliable remote signaling contacts (optional, -R version)
- Fault indicator: green / not-green
- Protection class: IP 20 (with protection module inserted, embedded in PCB)
- Housing: UL 94 V-0 thermoplastic
- Operating temperature: -40 °C … +85 °C | Humidity: 5–95% | Altitude: up to 4000 m
- DIN 43880 dimensions: 1 TE / 18 mm — Weight: 20–22 g
- Remote contact switching capacity: AC 250 V/1 A, 125 V/1 A; DC 48 V/0.5 A, 24 V/0.5 A, 12 V/0.5 A
PCB Socket T1 and T2 PV are used in DC applications where protection is integrated into the device by the manufacturer:
- String combiner boxes — On-board protection at the DC aggregation point
- PV inverters — Integrated protection for inverter control/power boards
- OEM manufacturing — Electronic and panel manufacturers producing their own boards/devices
- PV systems up to 750 V DC — Rooftop and ground-mounted solar applications
- Space-constrained panels — Compact designs where a separate DIN rail SPD is not feasible
- Monitored installations — SCADA integration with remote signaling contact (-R)
- Vibrating field conditions — Including tracker systems
- Installations with direct lightning risk — Type 1+2 protection with T1 version
