Smart Lightning Protection

C65 Surge Protective Backup Protector

Name: C65 Surge Protective Backup Protector
Brand: YESLON
SKU: scscb-c65-protector
Price: 1 CNY
Availability: InStock

SCSCB15

Limits induced lightning surges and internal grid overvoltages; 35mm DIN rail mounting, 2P/4P options, covering T1/T2/T3 test classes.

≤50ns100kA0.3s

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Product Overview

Limits induced lightning surges and internal grid overvoltages; 35mm DIN rail mounting, 2P/4P options, covering T1/T2/T3 test classes.

Core capabilities

Low Residual Voltage: Voltage protection level down to 1.5kV with response time ≤50ns, clamping overvoltages quickly. Multiple Configurations: 2P/4P and 275V/385V combinations, compatible with AC and DC systems. High Surge Capacity: Nominal discharge current 20kA, maximum 40kA, absorbing high-energy impulses.

Data Generated

≤50ns100kA0.3s

Product Features

Low Residual Voltage

Voltage protection level down to 1.5kV with response time ≤50ns, clamping overvoltages quickly

Multiple Configurations

2P/4P and 275V/385V combinations, compatible with AC and DC systems

High Surge Capacity

Nominal discharge current 20kA, maximum 40kA, absorbing high-energy impulses

T2 Class Protection

Effectively discharges induced lightning surges and internal grid overvoltages

Fast Response

Completes energy discharge within ≤50ns, protecting downstream precision equipment

Compact Design

2P is 36mm wide and 4P is 72mm wide, saving distribution box space

System Topology

Technical Parameters

Technical Data

Rated operating voltage 230/400V AC Operating frequency 50/60Hz Maximum continuous operating voltage Uc 275V / 385V AC Nominal discharge current In 10 / 20 / 30 / 40kA Maximum discharge current Imax 20 / 40 / 60 / 80 / 100kA Voltage protection level Up 1.5kV (Uc=275V) / 1.8kV (Uc=385V)

Rated operating voltage	230/400V AC
Operating frequency	50/60Hz
Maximum continuous operating voltage Uc	275V / 385V AC
Nominal discharge current In	10 / 20 / 30 / 40kA
Maximum discharge current Imax	20 / 40 / 60 / 80 / 100kA
Voltage protection level Up	1.5kV (Uc=275V) / 1.8kV (Uc=385V)
Response time	≤50ns
Power-frequency short-circuit operating current	3A
Power-frequency disconnection time	0.3s
Power-frequency current disconnection cycles	1000 cycles
Poles	1P / 2P / 3P / 4P
Maximum conductor cross-section	6~25mm²
Ambient temperature	-40℃ ~ +80℃
Dimensions	87.5×81.5×18mm (single pole)
Remote signalling	Ordered separately
Mounting	Standard 35mm DIN rail

Installation Instructions

Standard 35 mm DIN rail mounting; terminals: supply side L1/L2/L3, N, PE, communication and signal terminals as marked on the device.

Key Points

FAQ

Which models make up the C65 backup protector range?

The range covers five models, SCSCB15, SCSCB20, SCSCB40, SCSCB60 and SCSCB80, in T1 and T2/T3 test classes. Maximum discharge current runs from 20kA to 100kA, and SCSCB15 is the T1 variant with 15kA maximum impulse current.

What role does the backup protector play in an SPD circuit?

It is connected in series ahead of the SPD and provides power-frequency short-circuit breaking capacity of up to 50kA. Operating current is 3A and disconnection time is 0.3s, preventing fire when a degraded SPD short-circuits.

How does SCSCB15 differ from the other models?

SCSCB15 belongs to test class T1 with a maximum impulse current of 15kA (10/350μs), so it sits at the direct lightning strike entry. The other models are T2/T3 classes, matched to SPDs of 20kA to 80kA on the 8/20μs waveform.

What are the mounting and wiring requirements?

Mounting is on a standard 35mm DIN rail, with a single-pole outline of 87.5×81.5×18mm and maximum conductor cross-section of 6~25mm². The supply side is wired to L1/L2/L3, N and PE.

What is the operating temperature range and certification status?

Operating temperature ranges from -40℃ to +80℃ and the device withstands 1000 power-frequency current disconnections. Certification is CE / CMA / CNAS accredited laboratory, and price is Request a quote per project.

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