GN19-12/1250 Indoor Horizontal Isolator Switch

🧩 Compact Form, Trusted Safety – For Efficient Indoor Isolation in MV Networks

The GN19-12/1250 horizontal-mounted indoor  isolator switch is specifically designed for 12kV indoor medium voltage switchgear systems where space-saving installation and reliable mechanical isolation are required. It features a robust horizontal knife-blade structure, suitable for manual or motorized operation in industrial and utility substations.

This unit complies with GB/T 1985 and IEC 62271-102, ensuring secure disconnection during maintenance, inspection, or emergency isolation.

📊 Technical Specifications

Parameter	Specification
Model	GN19-12/1250
Rated Voltage	12 kV
Rated Current	1250 A
Rated Short-time Withstand Current (4s)	31.5 kA
Peak Withstand Current	80 kA
Insulation Level	42 kV (1 min), 75 kV (impulse)
Operating Mechanism	Manual / Electric Optional
Mounting	Horizontal Fixed
Phases	3-pole
Conformity Standard	IEC 62271-102, GB/T 1985

✅ Key Features

• Horizontal Blade Design: Compact footprint for cabinet-mounted applications.

• Double Break Contacts: Enhances arc quenching and visible break.

• Silver-Plated Contacts: Corrosion-resistant, low contact resistance.

• Modular Assembly: Easy replacement and servicing of contact parts.

• Mechanism Options: Compatible with CS6 manual handle or electric actuator.

🏭 Recommended Applications

• Indoor medium-voltage switchgear panels

• Factory distribution substations

• Commercial building electrical rooms

• Industrial automation control rooms

• Backup isolation for transformer bays

🌐 Client Feedback from MV Panel Builders and OEMs

🔹 Emily K., Panel Integration Manager – ABB Australia
“We use the GN19-12/1250 switch in our indoor cubicles. Its horizontal layout simplifies busbar routing while saving panel depth.”

🔹 Thomas N., Substation Engineer – Hydro One, Canada
“The  Isolatorswitch operates smoothly and has performed reliably during our yearly test cycles. Assembly is straightforward.”

🔹 Michael P., OEM Electrical Contractor – Ireland
“Excellent price-performance ratio. We especially appreciate the clean internal layout enabled by the horizontal knife design.”

🔹 Andrew C., Grid Technician – UK Power Networks
“It fits well into compact panel spaces, and we’ve had no maintenance issues in the past 2 years.”

🔹 Sara M., Equipment Quality Inspector – Enel, Italy
“The switch is built to spec and passed all acceptance testing. Good contact strength and spring tension.”

❓ Frequently Asked Questions

• Is GN19-12/1250 suitable for motorized operation?
Yes, it can be configured with an electric actuator for remote control.

• Does this model provide visible isolation?
Yes, the knife contact design ensures a visible air gap when open.

• Can it be mounted in narrow switchgear compartments?
Its horizontal layout is optimized for compact panels.

• What standards does it comply with?
It meets IEC 62271-102 and GB/T 1985 for  Isolator switches.

• What is the rated insulation level?
The switch withstands 42kV (power frequency) and 75kV (impulse) conditions.

📞 Contact the Technical Team for Customization or Drawings

Thor – Electrical Engineer, Wei Shoe Elec
📞 Tel: +86-0577-62788197
📱 WhatsApp: +86 159 5777 0984
📧 Email: [email protected]

Need reliable medium-voltage isolation with a compact profile? The GN19-12/1250  Isolator switch is your proven solution—engineered for modern switchgear installations.