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Load Break Switches and Isolators

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Load Break Switches and Isolators Specification

Overheating Protection
Thermal Withstand Capability

Power Factor
1 (Non-inductive, purely resistive load)

Connector Type
Brass Terminals

IP Rating
IP 42

Mounting Type
DIN Rail/Panel Mount

Feature
Quick Make & Break, Visible Isolation, Arc Quenching

Surface Finish
Textured, Powder Coated

Shape
Rectangular

Humidity %
Up to 95% RH

Efficiency
Above 98%

Operating Temperature
-10C to +55C

Insulation Material
Polycarbonate

Product Type
Load Break Switch & Isolator

Application
Electrical Distribution Panels, Switchgear, Industrial Automation

Protection Level
Class II

Frequency (MHz)
50/60 Hz

Rated Voltage
415 V AC

Energy Consumption
Negligible (Mechanical Operation)

Output Type
Manual Switch Disconnection

Color
Grey

Dimension (L*W*H)
225mm x 110mm x 80mm

Weight
6.5 kg

Phase
Three Phase

Size
Standard Panel Cutout

Input Voltage
415 V AC

Material
High-grade Polycarbonate & Copper Contacts

No Of Poles
3

Connection Type
Screw Terminal

Maintenance
No Routine Maintenance Required

Switching Method
Rotary Manual

Vibration Resistance
IEC 60068-2-6

Packaging
Corrugated Box with Protective Inserts

Contact Type
Silver Plated Copper Contacts

Handle Type
Ergonomic, Lockable

Dielectric Strength
2.5 kV

Short Circuit Withstand Capacity
Up to 16 kA

Torque for Terminals
2.5 Nm

Flame Retardance
UL94-V0

Pollution Degree
Degree 2

Altitude Maximum
2000 m

Mechanical Endurance
10,000 operations

About Load Break Switches and Isolators

Load Break Switches and Isolators

We are one of the reputed OEM in the country and abroad for our type of 3.3 kV to 33 kV Isolators and 7.5 kV to 36 kV Load Break Switches. Our Load break switches are extensively used in power plants and distribution networks and are regarded as highly reliable.

The salient feature of make Load Break Switch is its ability to permit load connections even under a short circuit condition without danger to the operating personnel. It complies with IEC, VDE, & IS standards. A high speed (snap action) make and break ensures a fast switching action and the very special design of arc chutes having excellent extinguishing properties for both high and low currents, suitability of mounting in horizontal or vertical plane etc. prove the versatility of these switches.

Special Features of Isolators and Load Break Switches

High Operating reliability
Simple maintenance and inspection
High dynamic & thermal strength
Special tubular arc-chutes
Current interruption without visible arcs.
Simple driving mechanism
Tested in CPRI as per IS-9920 (= IEC 265)

Due to the compact design of individual cubicles, and the feasibility of mounting the switches in different directions, economy in space is achieved, with ample scope for future extension. The triple pole load break switch can be used for switching of transformer feeders, overhead lines, capacitor banks, cable feeders, and ring mains. For protection against circuits H.T. Fuses can be offered with the switch.

Our other key Switchgear products are Ring Main Gears, Ring Main Units, Unitized Package Sub-stations with Load Break Switches, Compact Substations with Load Break Switch and APFC Panels, Motor Control Centers & PCC Units.

Robust and Safe Construction

Manufactured with high-grade polycarbonate and silver-plated copper contacts, these switches and isolators offer superior flame retardance (UL94-V0) and vibration resistance as per IEC 60068-2-6. Advanced engineering ensures arc quenching and visible isolation, enhancing operator safety during maintenance and operations in industrial settings.

Efficient and Reliable Operation

Designed for quick make & break action, these switches boast mechanical durability with up to 10,000 operations. The rotary manual switching method provides precise control, supported by brass screw terminals for secure connections. With an efficiency above 98% and negligible energy consumption, they ensure effective power management in three-phase applications.

Flexible Installation and Maintenance

Suitable for standard panel cutouts and DIN rail/panel mounting, installation is simple and adaptable to varying requirements. With surface finished in textured powder coating and class II protection level, these devices are protected against environmental and electrical risks. The maintenance-free operation minimizes downtime and operational costs.

FAQs of Load Break Switches and Isolators:

Q: How do load break switches and isolators benefit industrial electrical panels?

A: Load break switches and isolators offer safe disconnection, quick make & break functionality, and visible isolation. With features like arc quenching and a high dielectric strength, they enhance safety and reliability, minimizing electrical hazards in distribution and automation panels.

Q: What makes these switches suitable for harsh operating environments?

A: Their flame-retardant UL94-V0 polycarbonate body, vibration resistance (IEC 60068-2-6), corrosion-resistant silver-plated copper contacts, and resistance to humidity up to 95% RH equip these devices for robust service in challenging industrial conditions.

Q: How are these switches installed and maintained?

A: The devices are designed for easy installation via DIN rail or panel mounting and standard panel cutouts. Brass screw terminals require 2.5 Nm torque for secure connection. The switches require no routine maintenance, reducing operational interruptions.

Q: Where are these switches commonly used?

A: These switches are ideal for electrical distribution panels, switchgear setups, and industrial automation systems, operating at 415 V AC and frequencies of 50/60 Hz. Their three-phase configuration suits a wide range of commercial and industrial applications.

Q: What is the process of switch operation and disconnection?

A: Operations are executed manually through a rotary handle, which is ergonomic and lockable for safety. The output type is manual switch disconnection, ensuring instant isolation with visible switch status, bolstered by arc quenching technology to control electrical discharge.

Q: What are the packaging and shipping safeguards for these switches?

A: Each unit is packed in a corrugated box with protective inserts, supporting safe transport and handling by distributors, exporters, importers, suppliers, and traders across India.

Q: What are the long-term usage benefits of these switches?

A: With mechanical endurance exceeding 10,000 cycles and efficiency above 98%, these switches offer lasting durability, low upkeep requirements, and reliable operation, contributing to cost savings and enhanced safety over time.

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