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ExS-T1T2-AC Series Single-Pole Pluggable Surge Protector

ExS-T1T2-AC Series Single-Pole Pluggable Surge Protector

The ExS-T1T2-AC series lightning arrester is designed by CHAC Electric to provide robust protection against lightning and surge currents in low voltage equipment. It features a single-pole design with a pluggable form factor, utilizing hermetical GDT (Gas Discharge Tube) technology and high follow current extinguishing capability. The arrester offers an extremely low voltage protection level and includes double terminals for flexible parallel or series (V-shape) connections.

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Product core features and industry applications

This single-pole pluggable lightning current protector utilizes sealed gas discharge tube (GDT) technology, offering superior continuous current interruption capability and extremely low residual voltage. Its innovative dual-terminal design supports parallel or V-type series connection modes, providing flexible, multi-scenario installation solutions for power distribution systems. The product integrates dual 10/350μs and 8/20μs spark gap protection mechanisms, effectively intercepting direct lightning currents up to 7kA (10/350 waveform), and complies with both IEC 61643-1 and GB 18802.1 international standards.

Key technological advantages

1.Intelligent status monitoring system: equipped with a mechanical red and green two-color fault indicator window, which automatically switches to the red warning state when the protection element fails, and simultaneously triggers the remote alarm terminal signal output

2.Multi-connection compatibility: supports mixed access of conductors and busbars, adapting to the connection requirements of conductors with different cross-sectional areas

3.Multi-layer protection architecture: Combining high-performance MOV (metal oxide varistor) and GDT to provide PSD I+II (B+C) protection in LPZ 0A-1 and above lightning protection zones

4.Engineering adaptability: specially designed for AC/DC power supply systems, it can withstand a maximum discharge current Imax (8/20μs) of 40kA, and a voltage protection level Up of less than 1.5kV

Typical application scenarios

As a primary lightning protection barrier for critical infrastructure, this product is widely used in:

◆Lightning electromagnetic pulse protection for low voltage incoming line cabinets in substations

◆DC side overvoltage protection for photovoltaic power generation systems

◆Surge protection for rail transit traction power supply equipment

Multi-level coordinated protection of 5G base station power supply systems

Its modular plug-in structure facilitates on-site maintenance, and the mean time to repair (MTTR) can be controlled within 15 minutes, significantly improving the availability of the power supply system.

Main parameters and technical performance

Technical parameter project Parameter Value
Rated insulation voltage Ui(V) 500V
Rated working voltage Ue(V) 230V/400(1P), 400V(2P、3P、4P)
Rated voltage Ue AC230V、AC400V
Rated current(A) le 32A、40A、50A、63A、80A、100A、125A
Number of poles 1P、2P、3P、4P
Rated short time withstand current lcw 12le (t=1s)
Rated short circuit making capacity Icm 20le (t= 0.05s)
Rated impulse withstand voltage Uimp (1.2/50µs.2000m)6kV
Mechanical & Electrical life Mechanical ≥8500, Electrical≥1500
Standards IEC60947-3,GB/T 14048.3
Compliant certification CCC

Conductor requirements and cross section

Copper cross-section(mm²) Rated current In(A)
6 32A
10 40A
10 50A
16 63A
25 80A
35 100A
50 125A

Dimensions(unit:mm)

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