LMBG-63 MCB Isolator Switch | DIN Rail 1P‑4P Low Voltage Disconnect Switch

Product Overview

LMBG-63 series modular isolating switch is a dedicated manual isolation component for low-voltage AC distribution systems. It is installed in distribution boxes, panel boards and control cabinets to realize main power disconnection, providing a clear and reliable visible break point for circuit maintenance and equipment overhaul.

The 4-pole model switches all phase conductors and neutral line simultaneously, achieving complete electrical isolation between upstream power supply and downstream loads. With AC-22A utilization category, it can perform rated load switching operation besides isolation function. Standard 35mm DIN rail mounting and modular design make it easy to assemble and rearrange inside distribution enclosures. It is widely adopted in industrial plants, commercial buildings, residential distribution and infrastructure power systems.

Key Product Features

✅ Standard Modular DIN-Rail Design Fits universal 35mm DIN rail, compact modular structure saves internal space of distribution boxes. Fast snap-on installation, no complex fixing work required.

✅ 4-Pole Full Circuit Isolation Switches all 3 phase lines and neutral line at the same time, realizes complete galvanic isolation, fully protects maintenance personnel from electric shock risk.

✅ AC-22A Load Break Capability Complies with AC-22A utilization category, capable of making and breaking rated resistive-inductive loads. Suitable for both isolation duty and routine load switching.

✅ Clear ON/OFF Status Indication Obvious I-O position marking with integrated green toggle handle. Operators can identify switch status at a glance, ensuring clear visible break point for safety.

✅ Flame-Retardant High-Strength Housing Made of high-grade flame-retardant engineering plastic, excellent dielectric strength, mechanical toughness and aging resistance, stable performance in long-term distribution environment.

✅ International Standard Compliance Manufactured according to IEC 60947-3 and GB/T 14048.3 standards, CCC certified, meets global low-voltage distribution safety requirements.

✅ Universal Compatible Dimensions Standard mounting footprint and terminal layout, fully compatible with mainstream modular isolators on the market. Can be directly replaced without cabinet modification.

Technical Specifications

Application Scenarios

• Main power isolation switch for low-voltage distribution boxes & panel boards
• Safety isolation point for industrial equipment maintenance and circuit overhaul
• General main switch for commercial building and residential power distribution
• Power disconnection device for control cabinets and motor control centers
• Circuit isolation for infrastructure and public facility distribution systems

Our Advantages

1. Ample stock for fast delivery Common specifications are in sufficient stock, support mixed batch orders for panel builders, with fast bulk shipment available.
2. Strict factory quality inspection Each unit undergoes continuity test, dielectric withstand test and insulation test before delivery to ensure reliable on-site performance.
3. Standard size with high compatibility Universal mounting dimensions and terminal arrangement, can directly replace mainstream modular isolators on the market without cabinet modification.
4. Full technical documentation support Provide dimension drawings, wiring diagrams and product datasheets to support project design and tender bidding. Fast overseas technical response.
5. Flexible customization service Support OEM branding and special specification customization to meet different project and distributor requirements.

Custom Solution

We provide project-oriented custom solutions for LMBG-63 isolating switch:

• OEM Brand Customization: Custom silk-screen logo and model marking on product housing for branded resale.
• Specification Customization: Custom current ratings and pole configurations (1P/2P/3P/4P) according to project requirements.
• Export-grade Custom Packing: Neutral carton, customer-branded packaging, seaworthy reinforced packing for long-distance sea transportation.
• Project-level Technical Support: Supply CAD drawings, test reports and certification documents for project bidding and local approval.
• Large-order Priority Production: Priority production scheduling for large-volume project orders to guarantee delivery time.

Share your required current rating, pole configuration and application scenario, our engineers will recommend the most suitable isolator solution within 24 working hours.

FAQ

Q1: What is LMBG-63 isolating switch mainly used for?

A: It is a modular DIN-rail disconnector used for main circuit isolation in low-voltage distribution systems, providing a visible break point to ensure personnel safety during equipment maintenance and circuit overhaul.

Q2: Can this isolator switch break load current?

A: Yes, it meets AC-22A utilization category, which supports rated load making and breaking. It is primarily for isolation duty, and can also switch resistive-inductive loads within rated range.

Q3: Is this switch DIN-rail mountable?

A: Yes, it fits standard 35mm DIN rail, which is the universal mounting standard for modular low-voltage distribution components.

Q4: What standards does LMBG-63 comply with?

A: It complies with IEC 60947-3 international standard and GB/T 14048.3 standard, and holds CCC certification.

Q5: Do you support OEM private label service for distributors?

A: Yes, we support custom logo and marking printing on the product, with a certain MOQ applied for OEM service.

Q6: Can it replace other brands of 63A modular isolators directly?

A: Yes, its standard mounting dimensions and terminal layout are compatible with mainstream modular isolating switches on the market, allowing direct drop-in replacement.

Q7: What pole options are available for this series?

A: Standard options include 1P, 2P, 3P and 4P to match different types of distribution circuit requirements.