Split Phase Surge Protection – Reliable SPD for 3W+G Systems
Split Phase Surge Protection -BT 3L-WF MBC 150 2P
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Split Phase Surge Protection -BT 3L-WF MBC 150 2P

The Split Phase Surge Protection BT 3L-WF MBC 150 2P (840843) is designed for installation at the LPz 0A–2 boundary or higher, providing effective surge protection for low-voltage equipment. It is applied as an SPD Class I+II (1+2 / B+C) device, specifically for split-phase / 3W+G power supply systems. Engineered for high reliability, this surge protection device complies with IEC 61643-11 and UL 1449 4th Edition (Type 4-1 combined SPD) standards, ensuring robust defense against transient overvoltages in demanding electrical environments.
  • Type

    BT 3L-WF MBC 150 2P

  • Art.-No.

    840843

  • Features

    1. Adopting plug-in PCB SPD class I+II surge protection module.
    2. Visual protection status indication, and failure indication function.
    3. IP65 waterproof protection, suitable for outdoor application.
    4. Built-in wiring terminal, easy for connection.
    5. Total lightning impulse current up to 20kA 10/350 μs.
    6. High discharge capacity,quick response.

Split Phase Surge Protection
Location of Use: Main Distribution Boards
System Type:
Split Phase Surge Protection
Modules:
2 Poles Protection Elements:
High Energy MOV
Surge Ratings: In=20kA(8/20μs)
High Surge Currents:
limp=8kA (10/350μs), Imax=50kA(8/20μs)

Split Phase Surge Protection ensures reliable defense for low-voltage equipment in split-phase (3W+G) systems. Designed for installation at LPz 0A–2 boundaries or higher, it combines Class I+II protection in one unit. Certified to IEC 61643-11 and UL 1449 4th Edition, it delivers high surge capacity, safety, and long-term system reliability.

Features

1. Split Phase Compatibility: Designed specifically for 120/240V split phase power systems used in residential and light commercial setups.
2. Dual Line Protection: Provides surge protection across both hot lines (L1 and L2) as well as neutral and ground.
3. Class I+II SPD Design: Offers combined protection against lightning strikes and switching surges.
4. High Surge Capacity: Effectively handles high-energy transients to safeguard sensitive equipment.
5. Modular Construction: Plug-in modules for easy installation, maintenance, and quick replacement.
6. Visual Status Indicators: Built-in indicators show the operational status for fast maintenance checks.
7. Remote Signaling Option: Optional contacts enable integration with alarm systems or building management systems.
8. Standards Compliance: Meets IEC 61643-11, EN 61643-11, and UL 1449 standards for certified surge protection.
Split Phase Protection Device (SPD)

Advantages

1. Protects Sensitive Equipment: Prevents damage to appliances, HVAC systems, and electronics connected to split-phase power.
2. Ensures Power Reliability: Reduces the risk of outages and downtime caused by voltage surges or lightning strikes.
3. Extends Equipment Lifespan: Minimizes electrical stress on household and commercial devices for long-term durability.
4. Enhances Safety: Reduces fire risks and electrical hazards associated with transient overvoltages.
5. Lowers Maintenance Costs: Decreases the need for frequent repairs or replacements of surge-damaged equipment.
6. Provides Peace of Mind: Keeps critical systems like heating, cooling, and security devices running safely.
Whole-House Surge Protector with AC Coverage

Applications

1. Residential Homes: Protects household appliances, lighting systems, and electronics from surge damage in 120/240V systems.
2. Small Businesses: Safeguards POS systems, office equipment, and communication devices from electrical surges.
3. HVAC Systems: Provides surge protection for air conditioners, heat pumps, and furnaces powered by split-phase circuits.
4. Home Offices: Protects computers, modems, routers, and other sensitive IT devices from transient overvoltages.
5. Smart Home Installations: Secures IoT devices, automation controllers, and smart lighting systems against surges.
6. Light Industrial Facilities: Shields control panels, motors, and tools connected to split-phase power supplies.
7. Renewable Energy Systems: Applied in residential solar inverter setups using split-phase configurations.
BT 3L-WF MBC 150 2P Installation

Technical Data

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