GN19-12M/630 indoor High Voltage Isolator Switch (with Panel)

The GN19-12M/630 indoor isolator switch is a medium-voltage isolator designed for 12kV switchgear systems, offering safe and visible isolation for equipment maintenance. Rated at 630A, this switch is ideal for indoor applications in compact cabinets (e.g., XGN, KYN28, HXGN).

This model supports manual operation and features a rotary contact structure with reliable opening and breaking performance. It can be combined with grounding switches for added safety.

🔧 Key Features

Rated voltage: 12kV
Rated current: 630A
Three-position design: ON / OFF / EARTH
The rotating contact system ensures reliable isolation
Compact footprint for cabinet integration
Optional grounding module (GN19-12M/T series)

📐 Technical Specifications

Parameter	Value
Rated Voltage	12kV
Rated Current	630A
Power Frequency Withstand	42kV (1 min)
Lightning Impulse Withstand	75kV (BIL)
Rated Short-Time Current	20kA / 3s
Peak Withstand Current	50kA
Mechanical Endurance	≥ 2000 operations
Installation	Horizontal/vertical
Operating Mechanism	Manual
Compliance Standards	GB1985, IEC 62271-102

✅ Standards & Certifications

GB1985 – High-voltage AC disconnectors and earthing switches
IEC 62271-102 – High-voltage switchgear and controlgear
ISO 9001, ISO 14001, ISO 45001 certified
CE-compliant, complete type test documentation available

🔌 Application Scenarios

12kV indoor switchgear cabinets (KYN28, XGN15, HXGN)
Transformer incoming/outgoing switch
Load isolation in ring main units (RMUs)
Medium-voltage panel rooms in substations or factories
Isolator switch with earthing for transformer protection

🌍 Case Example: Compact Substation in Kenya (2021)

In a 2021 industrial power upgrade near Nairobi, Kenya, GN19-12M/630 isolator switches were installed inside XGN15 switchgear panels to isolate 12kV feeders during transformer maintenance.

Result:
Reliable visible isolation
Compact fit within 500mm-wide cabinets
Combined with GN19-12M/T grounding unit for worker safety

❓ Frequently Asked Questions (FAQ)

1. Can this switch be used in both horizontal and vertical configurations?
Yes. It supports both installations depending on the cabinet layout.

2. What’s the difference between GN19-12M and GN19-12C?
GN19-12M is a modernized type with a better contact system and optional grounding integration.

3. Can it work with vacuum circuit breakers?
Yes. It’s often used in conjunction with 12kV VCBs for incoming/outgoing line isolation.

4. Is the switch lockable for maintenance?
Yes. The manual mechanism supports the padlock for safety.

5. What is the delivery lead time?
Usually 10–15 working days based on quantity and configuration.