External DC Isolator Switch

The SYDSE-32 External DC Isolator Switch, supplied by China-based manufacturer Zhejiang Soutya New Energy LLC, is a 300–1500 V DC, 32 A non-polarized rotary switch featuring an 8 mm contact gap and double-break rotating contacts for rapid arc extinction.it is engineered for reliable manual isolation in PV combiner boxes, battery strings and energy-storage systems.

Characteristic

Non-polarity
IP66 protection
Short Arc
Flame Retardant Material
Rotary contact with self-cleaning design

Application scenarios

1.PV string combiner boxes

Mounted between incoming strings and the DC bus, the isolator gives installers a visible, lockable break point for safe string maintenance or rapid shutdown during fault conditions.

2.Battery energy-storage racks

Placed on each cluster’s positive and negative legs, it allows technicians to isolate individual battery racks without shutting down the entire bank, supporting hot-swap servicing and fire-safety protocols.

3.Containerized ESS skids

Used as the manual DC disconnect on the skid’s external wall, the IP66 housing withstands wash-down and dust while the 8 mm contact gap meets the 1500 V isolation requirement for NEC 690.35 and IEC 60364-5-53.

4.EV fast-charging cabinets

The non-polarized, bidirectional design safely interrupts the 800–1000 V DC link between charger module and battery pack, enabling emergency stop or module replacement without arc damage.

5.Rooftop commercial inverters

Installed directly beneath the inverter, the rotary handle can be locked in the OFF position for lock-out/tag-out during inverter replacement or arc-fault servicing, eliminating the need to climb to the roof edge combiner box.

Technical Parameter

Wiring parameters

Wirng diagram

Appearance and Installation Dimensions