GW12 Isolating Switch

Engineered for overhead distribution networks up to 38kV, the GW12 Isolating Switch offers reliable manual circuit isolation and sectionalizing. Available in 12kV and 36kV voltage classes with 400A and 630A ratings, it meets IEC 62271-102 requirements. Its silver-plated contacts, galvanized steel frame, and optional polymer insulators ensure sustained performance and corrosion resistance in challenging outdoor environments.

product details

Product Advantages

● Straightforward manual actuation eliminates reliance on control power or compressed air systems
● Silver-coated contact surfaces maintain low resistance over thousands of operations, minimizing energy losses
● Galvanized structural components resist rust and degradation even in coastal or industrially polluted atmospheres
● Choice of porcelain or polymer insulators lets users balance mechanical robustness with lightweight handling
● User-specified operating rod length simplifies integration into existing pole layouts without major modification

Applications

◆ Feeder sectionalizing on 12kV and 36kV overhead circuits
◆ Disconnect points at substation exits and transformer primaries
◆ Line isolation for maintenance crews on rural and urban distribution systems
◆ Heavy pollution sites including coastal zones, chemical plants, and desert regions
◆ Industrial overhead networks needing frequent reconfiguration or load transfer operations

Technical parameter

Electrical characteristics	Specification		Unit
Rated voltage of Disconnector	12	36	kV
Rated current	400 / 630		A
Rated frequency	50		Hz
Lighting Impulse withstand voltage	95	170	kV
Power frequency withstand voltage in 1 min (Dry)	42	70	kV
Power frequency withstand voltage in 10 s (Wet)	36	60	kV
Rated short circuit withstand current	16(for 400A)/ 20(for 630A)		kA
Rated short circuit withstand time	3		s
Rated peak withstand current	40(for 400A)/ 50(for 630A)		kA
Creepage	31		mm/kV

Spare parts
Operating Mechanism	with
Arcing distinguishing chamber	with/without
Operating rod length	Customerized

Material
Terminal pads	Copper plated by silver
Blade	Copper plated by silver
Insulator	Porcelain/Polymer
Channel Base	Steel hot galvanized

Service conditions
Environment maximum temperature	40	℃
Pollution level	Heavy
Altitude	≤1000	Meter

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