Wall Mount Surge Suppressor - Electrical Voltage Control Unit
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Wall Mount Surge Suppressor -BT 4L-WP CM 275/40 3P
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Wall Mount Surge Suppressor -BT 4L-WP CM 275/40 3P

Wall Mount Surge Suppressor BT 4L-WP CM 275/40 3P（810829）is for installation at LPZ 0B-1 or higher, protecting low voltage equipment from surge damage. Applied in modular SPD Class II (Class C) for 3 Phase TN-C(“3+0” circuit) power supply system. Compliance Standards: IEC 61643-11:2011;EN 61643-11:2012;GB/T 18802.11-2020.

  • Type

    BT 4L-WP CM 275/40 3P

  • Art.-No.

    810829

  • Features

    1. Adopting SPD class 2 (class C/II) combined "3+0" circuit for TN-C system.
    2. Single-pole module max. lightning discharge current up to L-PEN 40kA (8/20us).
    3. Built-in circuit breaker, prewired with SPD, easy for installation.
    4. Impulse counter function, recording the lightning events.
    5. Water proof level Ip65, suitable for indoor or outdoor application.
    6. Mode of protection: L-PEN.

Inquiry
Download Datasheet
Wall Mount Surge Suppressor
Support OEM and ODM for TN-C system
Protection Elements: High Engry MOV
Mode of protection: L-PEN
Surge Ratings: In=20kA(8/20μs)
High Surge Currents: Imax=40kA(8/20μs)

Wall Mount Surge Suppressor is designed for localized voltage surge control within electrical systems. Installed directly on walls near power distribution points or equipment locations, it limits transient overvoltage before it reaches connected circuits. This product supports steady electrical conditions during switching actions or external power disturbances. Its wall-mounted structure allows flexible placement outside distribution panels while remaining active during normal power flow. By controlling voltage surges close to protected loads, it helps reduce electrical stress on wiring, devices, and control components in residential and light-load environments.

Features

1. Wall-Mounted Installation: Designed for direct wall placement near power distribution or equipment areas.
2. Localized Surge Control: Limits voltage spikes close to protected circuits and loads.
3. Fast Electrical Response: Reacts immediately to short-duration overvoltage events.
4. Defined Voltage Limiting Range: Controls surge voltage within preset electrical thresholds.
5. External Panel Placement: Operates outside distribution panels without internal modification.
6. Continuous Protection State: Remains active during everyday electrical operation.
Surge Protective Device

Advantages

1. Flexible Installation Location: Allows placement based on equipment layout and wiring paths.
2. Reduced Circuit Exposure: Limits surge impact before voltage reaches sensitive devices.
3. Space Conservation Inside Panels: Avoids occupying breaker or panel interior space.
4. Controlled Electrical Conditions: Supports stable voltage during power disturbances.
5. Suitable for Targeted Protection: Focuses surge control on selected electrical zones.
6. Long-Term Operational Support: Designed for continuous use over extended service periods.
Surge Protection Device

Applications

1. Electrical Equipment Rooms: Installed near power sources supplying sensitive devices.
2. Wall-Mounted Distribution Areas: Suitable for power control outside main panels.
3. Home Office Electrical Lines: Protects circuits supplying computers and peripherals.
4. Control Panel Power Feeds: Supports stable voltage for control and monitoring units.
5. Residential Power Zones: Adds localized surge control within home electrical layouts.
6. Electrical Upgrade Projects: Adds surge protection without modifying existing panels.
Surge Protection

Technical Data

Product Showcase

BT 4L-WP CM 275/40 3P Circuit
Circuit
BT 4L-WP CM 275/40 3P Dimension & Installation
Dimension & Installation

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