RH-B 11kV and 33kV Gang Isolator Switch

The RH-B series outdoor gang isolator switch adopts a three-phase gang-operated structure and is suitable for outdoor installation in:

• overhead distribution lines,
• pole-mounted substations,
• transformer isolation systems,
• industrial distribution networks.

The switch is designed to:

• isolate energized equipment under no-load conditions,
• provide a visible disconnection point,
• improve maintenance safety,
• support manual operating mechanisms.

Unlike circuit breakers or load break switches, the RH-B isolator is mainly intended for isolation purposes rather than interrupting load current.

Main Features

• Outdoor installation type
• Gang-operated three-phase mechanism
• Rated voltage: 11kV / 33kV
• Visible air-break isolation
• Manual operation
• Simple and reliable structure
• Suitable for harsh outdoor environments
• Optional grounding arrangement
• Low maintenance requirements

Technical Specifications

Working Principle

The RH-B gang isolator switch mechanically links all three phases together so they operate simultaneously through a common operating handle or linkage mechanism. The switch creates a visible air gap after opening, ensuring safe isolation for maintenance personnel.

Applications

• Pole-mounted substations
• Overhead distribution lines
• Utility power networks
• Rural electrification projects
• Transformer isolation systems
• Industrial outdoor switchyards

Product Advantages

Visible Isolation

Provides a clear and reliable visible break for maintenance safety.

Simple Outdoor Structure

Robust mechanical design suitable for long-term outdoor service.

Reliable Mechanical Linkage

Three-phase gang operation ensures synchronized opening and closing.

Low Maintenance

Simple construction reduces servicing requirements and operating costs.

Standards

The RH-B gang isolator switch is generally manufactured according to:

• IEC 62271-102
• IEC 60964

Outline Dimension