Surge Protective Device Type 3 – TT/TN-S System Protection
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Surge Protective Device Type 3 -BT TT 275 3N RM
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Surge Protective Device Type 3 -BT TT 275 3N RM

The BT TT 275 3N RM (812330) Surge Protective Device Type 3 is designed for installation at LPZ 1-2 or higher, providing effective protection for low-voltage equipment against surge damage. It is suitable for use in modular SPD Class III (Class D) applications within three-phase TT or TN-S power systems using a "3+1" circuit configuration. An optional remote signaling terminal is available for monitoring. The device is built in accordance with IEC 61643-11, EN 61643-11, and GB/T 18802.11 standards, ensuring reliable performance and compliance.

  • Type

    BT TT 275 3N RM

  • Art.-No.

    812330

  • Features

    1. Green light indicates normal and red indicates fault.
    2. Three phase protection and disconnector.
    3. Remote signalling connector for fault indication.

Inquiry
Download Datasheet
Surge Protective Device Type 3
Type 3 SPD
Application:
Protecting eletronic equipment from surge damages and remote terminal is optional .
System Type:
Three phase power supply system
Protection Elements:
High Energy MOV + High Energy GDT
Surge Protective Device Type 3
Uoc：10kV

Surge Protective Device Type 3 is designed for installation at LPZ 1-2 or higher, providing reliable protection for low-voltage equipment against transient overvoltages. Ideal for TT and TN-S power systems using a “3+1” configuration, it is suitable for final stage surge protection. This device complies with international standards including IEC 61643-11, EN 61643-11, and GB/T 18802.11. Optional remote signaling is available for monitoring, making it a dependable choice for modular Class III (Class D) surge protection.

Features

1. Final Stage Protection: Designed for installation at the last level (LPZ 1-2 or higher) to protect sensitive end-user equipment.
2. "3+1" Circuit Configuration: Suitable for three-phase TT and TN-S systems, offering protection across all lines and neutral.
3. Modular Design: Easy maintenance and quick replacement of modules without tools or rewiring.
4. Optional Remote Signaling: Supports remote status monitoring to integrate with building management or alarm systems.
5. Low Residual Voltage: Ensures minimal let-through voltage to protect sensitive electronics.
6. High Response Speed: Reacts quickly to transient overvoltages to minimize equipment exposure.
7. Standards-Compliant: Meets IEC 61643-11, EN 61643-11, and GB/T 18802.11 requirements for Class III (Class D) surge protection.
8. Thermal Disconnection: Built-in overheat protection for enhanced safety and reliability.
Class III Surge Protector

Advantages

1. Protects Sensitive Electronics: Minimizes risk of damage to computers, control systems, and other critical equipment.
2. Reduces Maintenance Costs: Helps prevent frequent equipment failures caused by surges, lowering repair and replacement expenses.
3. Improves System Reliability: Enhances overall power system stability by reducing unplanned downtime from transient overvoltages.
4. Easy to Maintain: Modular components allow for fast, tool-free replacements, minimizing service interruptions.
5. Increases Safety: Thermal disconnect and surge limiting capabilities reduce fire risk and electrical hazards.
6. Supports Long-Term Equipment Life: Protects electronics from cumulative damage over time, extending their operational lifespan.
7. Simplifies Compliance: Helps meet surge protection requirements in electrical codes and international standards.
8. Versatile Application: Suitable for residential, commercial, and industrial settings, making it a flexible solution across projects.
BT TT 275 3N RM installation

Applications

1. Residential Buildings: Protects home appliances, smart systems, and entertainment electronics from surge damage.
2. Commercial Offices: Safeguards computers, servers, routers, and other sensitive equipment in workspaces.
3. Industrial Facilities: Used at the final protection stage for control panels, sensors, and automated systems.
4. Data Centers: Ensures uptime and prevents damage to critical networking and storage equipment.
5. Hospitals and Clinics: Protects life-support systems, diagnostic machines, and sensitive medical electronics.
6. Retail and POS Systems: Prevents downtime and data loss in cash registers, ATMs, and digital signage.
7. Education and Institutions: Safeguards lab equipment, projectors, and digital classrooms from power surges.
8. Telecommunication Systems: Shields telecom gear and switching equipment in base stations and network hubs.
BT TT 275 3N RM Mounting

Technical Data

Product Showcase

type 3 surge protection device
type 3 surge protector
type 3 spd surge protector

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