Surge protective devices (SPDs) are designed to meet requirements for UL 1449 Forth Edition and IEC/EN 61643-11. They are DIN-rail mountable featuring a fail-safe protection, visual indicator and remote signal contact. It has a good environmental adaptability and meets the requirements of high reliability in important field. - SETsafe

Category (5)

Product I (23)

Product II (378)

Over Temperature Protection（80）

Over Voltage Protection（228）

Over Current Protection（53）
- Miniature Fuses（26）
  Miniature Fuses
  Miniature Fuses is an Over Current Protection device. Its resistance is very low. When the circuit works normally, it is equivalent to a wire, which can conduct the circuit continuously and stably. When the current fluctuates due to circuit instability or external interference, it should also be able to withstand a certain range of overload. Only when overload or short circuit happens, Miniature Fuses can blow fast to protect the circuit. SETsafe | SETfuse Miniature Fuses is widely used in all kinds of electrical equipment. It has a variety of mounting modes, compact structure, reliable and stable performance. Technical parameters of SETsafe | SETfuse Miniature Fuses: Its rated current ranges from 0.1 A to 40 A, rated voltage ranges from 125 VAC to 500 VAC, and from 24 VDC to 600 VDC, complies with RoHS and REACH, and is approved by cURus, VDE, PSE, CCC, CQC, KC, TUV.
- Low Voltage Fuses (LV Fuses)（27）

Active Protection（15）
Active Protection
Active Protection

Accessories（2）
Accessories
Accessories
- For Over Current Protection Products（2）
  For Over Current Protection Products
  For Over Current Protection Products
  - Fuse Clip - for Cartridge Fuse-links (CFL)（1）
    Fuse Clip - for Cartridge Fuse-links (CFL)
    Fuse Clip - for Cartridge Fuse-links (CFL)
  - Fuse Holder - Suitable for Photovoltaics (PV)（1）
    Fuse Holder - Suitable for Photovoltaics (PV)
    Fuse Holder - Suitable for Photovoltaics (PV)

SPD for Low-voltage Power Systems

Manufacturer
Overview
Glossary
Mounting Style
Termination Style
Applications
Quality Assurance
Attention
Brand
Tradename
Catalog
ODM & OEM
Production Line

Max. Continuous Operating Voltage (VAC)
150
175
275
320
385
440
510
550
680
690
L-N: 150;N-PE: 255
L-N: 275;N-PE: 255
L-N: 320;N-PE: 255
L-N: 385;N-PE: 255
1300
760
900
L-N: 175;N-PE: 255
460

Nominal Discharge Current (8/20 μs) (kA)

Max. Discharge Current (8/20 μs) (kA)

Impulse Discharge Current (10/350 μs) (kA)

12.5
11
10
7.5
5
L-N: 12.5; N-PE: 12.5
L-N: 11.5; N-PE: 12.5
L-N: 11.0; N-PE: 12.5
11.5

Modes of Protection

Ld-Ld
L-PE, N-PE (2+0)
L-N, N-PE (1+1)
L-PE (3+0)
L1-G, L2-G
L1-G, L2-G, N-G
L1-N, L2-N, N-G
L-PE, N-PE (4+0)
L-N, N-PE (3+1)
+ － -, -－PE

Agency Approvals

Product Series

SD20(30)RxxxL205
SD20(30)RxxxA203
SD20(30)RxxxL405
SD20(30)RxxxA404
SD20S230A203 / SD20S230L205
SD20S230A404 / SD20S230L405
SD20S230A404 (3P)
SD25T(1+0)
SD25T(2+0)
SD25T(1+1)
SD25T(3+0)
SD25T760(900)(3+0)
SD25T(4+0)
SD25T(3+1)
SD25TxxxL201
SD25TxxxA301/L302
SD25TS(3+0)
SD25B

SD20(30)RxxxL205 series, T2
Uc: 385 VAC
In (8/20 μs): 20 / 30 kA
Imax (8/20 μs): 40 / 60 kA
Protection Mode: 2+0
Learn more
SD20(30)RxxxA203 series, T2
Uc: 150 ~ 385 VAC
In: 20 / 30 kA
Imax (8/20 μs): 40 / 60 kA
Protection Mode: 1+1
Learn more
SD20(30)RxxxL405 series, T2
Uc: 275 ~ 750 VAC
In (8/20 μs): 20 / 30 kA
Imax (8/20 μs): 40 / 60 kA
Protection Mode: 4+0
Learn more
SD20(30)RxxxA404 series, T2
Uc: 335 ~ 440 VAC
In (8/20 μs): 20 / 30 kA
Imax (8/20 μs): 40 / 60 kA
Protection Mode: 3+1
Learn more
SD20S230A203 / SD20S230L205 series, T2
Uc: 385 VAC
In (8/20 μs): 20 kA
Protection Mode: 1+1 / 2+0
Learn more
SD20S230A404 / SD20S230L405 series, T2
Uc: 385 VAC
In (8/20 μs): 20 kA
Protection Mode: 3+1 / 4+0
Learn more
SD20S230A404 (3P) series, T2
Uc: 385 VAC
In (8/20 μs): 20 kA
Imax (8/20 μs): 40 kA
Protection Mode: 3+1
Learn more
SD25TxxxL100 series, T1+T2
Uc: 150 ~ 680 VAC
Iimp (10/350 μs): 5 ~ 12.5 kA
In (8/20 μs): 25 kA
Protection Mode: 1P
Learn more
SD25TxxxL205 series, T1+T2
Uc: 150 ~ 550 VAC
In (8/20 μs): 25 kA
Iimp (10/350μs): 7.5 ~ 12.5 kA
Protection Mode: 2+0
Learn more
SD25TxxxA203 series, T1+T2
Uc: 150 ~ 385 VAC
In (8/20 μs): 25 kA
Iimp (10/350 μs): 11 ~ 12.5 kA
Protection Mode: 1+1
Learn more
SD25TxxxL306 series, T1+T2
Uc: 150 ~ 680 VAC
In (8/20 μs): 25 kA
Iimp (10/350 μs): 5 ~ 12.5 kA
Protection Mode: 3+0
Learn more
SD25TxxxL306 series (4P), T1+T2
Uc: 880 / 1300 VAC
In (8/20 μs): 25 kA
Iimp (10/350 μs): 5 ~ 10 kA
Protection Mode: 3+0
Learn more
SD25TxxxL405 series, T1+T2
Uc: 150 ~ 680 VAC
In (8/20 μs): 25 kA
Iimp (10/350 μs): 5 ~ 12.5 kA
Protection Mode: 4+0
Learn more
SD25TxxxA404 series, T1+T2
Uc: 150 ~ 385 VAC
In (8/20 μs): 25 kA
Iimp (10/350 μs): 11 ~ 12.5 kA
Protection Mode: 3+1
Learn more
SD25TxxxL201 series T1+T2
Uc: 150 ~ 320 VAC
In (8/20 μs): 25 kA
Imax (8/20 μs): 50 kA
Learn more
SD25TxxxA301/L302 series T1+T2
Uc: 150 ~ 385 VAC
In (8/20 μs): 25 kA
Imax (8/20 μs): 50 kA
Learn more
SD25TS series, T1+T2
Uc: 1300 VAC
In (8/20 μs): 25 kA
Iimp (10/350 μs): 12.5 kA
Protection Mode: 3+0
Learn more
SD25B series
Uc: 275 VAC
In (8/20 μs): 25 kA
Iimp (10/350 μs): 25A
Learn more

SD20(30)RxxxL205 series, T2
Uc: 385 VAC
In (8/20 μs): 20 / 30 kA
Imax (8/20 μs): 40 / 60 kA
Protection Mode: 2+0

SD20(30)RxxxA203 series, T2
Uc: 150 ~ 385 VAC
In: 20 / 30 kA
Imax (8/20 μs): 40 / 60 kA
Protection Mode: 1+1

SD20(30)RxxxL405 series, T2
Uc: 275 ~ 750 VAC
In (8/20 μs): 20 / 30 kA
Imax (8/20 μs): 40 / 60 kA
Protection Mode: 4+0

SD20(30)RxxxA404 series, T2
Uc: 335 ~ 440 VAC
In (8/20 μs): 20 / 30 kA
Imax (8/20 μs): 40 / 60 kA
Protection Mode: 3+1

SD20S230A203 / SD20S230L205 series, T2
Uc: 385 VAC
In (8/20 μs): 20 kA
Protection Mode: 1+1 / 2+0

SD20S230A404 / SD20S230L405 series, T2
Uc: 385 VAC
In (8/20 μs): 20 kA
Protection Mode: 3+1 / 4+0

SD20S230A404 (3P) series, T2
Uc: 385 VAC
In (8/20 μs): 20 kA
Imax (8/20 μs): 40 kA
Protection Mode: 3+1

SD25TxxxL100 series, T1+T2
Uc: 150 ~ 680 VAC
Iimp (10/350 μs): 5 ~ 12.5 kA
In (8/20 μs): 25 kA
Protection Mode: 1P

SD25TxxxL205 series, T1+T2
Uc: 150 ~ 550 VAC
In (8/20 μs): 25 kA
Iimp (10/350μs): 7.5 ~ 12.5 kA
Protection Mode: 2+0

SD25TxxxA203 series, T1+T2
Uc: 150 ~ 385 VAC
In (8/20 μs): 25 kA
Iimp (10/350 μs): 11 ~ 12.5 kA
Protection Mode: 1+1

SD25TxxxL306 series, T1+T2
Uc: 150 ~ 680 VAC
In (8/20 μs): 25 kA
Iimp (10/350 μs): 5 ~ 12.5 kA
Protection Mode: 3+0

SD25TxxxL306 series (4P), T1+T2
Uc: 880 / 1300 VAC
In (8/20 μs): 25 kA
Iimp (10/350 μs): 5 ~ 10 kA
Protection Mode: 3+0

SD25TxxxL405 series, T1+T2
Uc: 150 ~ 680 VAC
In (8/20 μs): 25 kA
Iimp (10/350 μs): 5 ~ 12.5 kA
Protection Mode: 4+0

SD25TxxxA404 series, T1+T2
Uc: 150 ~ 385 VAC
In (8/20 μs): 25 kA
Iimp (10/350 μs): 11 ~ 12.5 kA
Protection Mode: 3+1

SD25TxxxL201 series T1+T2
Uc: 150 ~ 320 VAC
In (8/20 μs): 25 kA
Imax (8/20 μs): 50 kA

SD25TxxxA301/L302 series T1+T2
Uc: 150 ~ 385 VAC
In (8/20 μs): 25 kA
Imax (8/20 μs): 50 kA

SD25TS series, T1+T2
Uc: 1300 VAC
In (8/20 μs): 25 kA
Iimp (10/350 μs): 12.5 kA
Protection Mode: 3+0

SD25B series
Uc: 275 VAC
In (8/20 μs): 25 kA
Iimp (10/350 μs): 25A

Xiamen SET Electronics Co., Ltd.

Din-rail Surge Protective Device

Surge protective devices (SPDs) are designed to meet requirements for UL 1449 Forth Edition and IEC/EN 61643-11. They are DIN-rail mountable featuring a fail-safe protection, visual indicator and remote signal contact. It has a good environmental adaptability and meets the requirements of high reliability in important field.

U_p

Voltage Protection Level

Maximum voltage to be expected at the SPD terminals due to an impulse stress with defined voltage steepness and an impulse stress with a discharge current with given amplitude and wave shape.

— (IEC 61643-11)

8/20 μs

8/20 Current Impulse

Current impulse with a nominal virtual front time of 8 µs and a nominal time to half-value of 20.

— (IEC 61643-11)

1.2/50 μs

1.2/50 Voltage Impulse

Voltage impulse with a nominal virtual front time of 1.2 µs and a nominal time to half-value of 50 µs.

— (IEC 61643-11)

U_c

Maximum Continuous Operating Voltage

Maximum r.m.s. voltage, which may be continuously applied to the SPD's mode of protection.

— (IEC 61643-11)

I_n

Nominal Discharge Current

Crest value of the current through the SPD having a current waveshape of 8/20 µs.

— (IEC 61643-11)

I_imp

Impulse Discharge Current for Class I Test

Crest value of a discharge current through the SPD with specified charge transfer Q and specified energy W/R in the specified time.

— (IEC 61643-11)

I_max

Maximum Discharge Current

Crest value of a current through the SPD having an 8/20 µs waveshape and magnitude according to the manufacturers specification. I_max is equal to or greater than I_n.

— (IEC 61643-11)

Modes of protection

An intended current path, between terminals that contains protective components, e.g. line-to-line, line-to-earth, line-to-neutral, neutral-to-earth.

Degrees of Protection Provided by Enclosure (IP Code)

Classification preceded by the symbol IP indicating the extent of protection provided by an enclosure against access to hazardous parts, against ingress of solid foreign objects and possibly harmful ingress of water.

TCO

Thermal-Link

A non-resettable device incorporating a THERMAL ELEMENT which will open a circuit once only when exposed for a sufficient length of time to a temperature in excess of that for which it has been designed.

ATCO

Alloy Thermal-Link

Alloy Type Thermal-Link, Alloy is the thermal element.

Din-Rail

Screw

Din-rail SPD

● AC Power Supplies

● New Energy

● Residential Building

● Telecommunications

● Internet Data Center (IDC)

● Industrial Control

Fuse quality 拷贝 4.png

SETsafe | SETfuse Quality Policy

Provide Industry-Leading Products

Raw-materials Supplier

Select critical raw materials: Must be from a manufacturer with quality management system (ISO9001, IATF16949) certification.

Annual or Quarterly Audits.

IQC (Incoming Quality Check)

AQL(MIL-STD-105E), Dimensions, Function, Visual Inspection, RoHS & REACH Test.

Document

Formulate corresponding incoming inspection specifications (01-QA-06-xxx) for each key material according to design data such as material technical indicators.

Testing Equipment and Tools

Projector, Tool Microscope, Digital Caliper, Salt Spray Tester, Universal Material Testing Machine, Spectrum Analyzer, etc.

品质保证-30.jpg

Manufacturing Process

Online Inspection and Testing (Function 100% Testing).

Document

Process Flow Chart.

Failure Mode and Effects Analysis (FMEA).

Quality Control Flow Chart (QCFC).

Standard Inspection Procedure (SIP).

Work Instruction (WI).

Online Testing and Inspection

Static three-parameter detection system.

100% Visual inspection.

etc.

IPQC (In Process Quality Control) Inspection

AQL(MIL-STD-105E), Dimensions Inspection, Function Test, Visual Inspection.

FQC ( Final Quality Control)

AQL(MIL-STD-105E), Dimensions Inspection, Function Test, Visual Inspection, RoHS & REACH Test.

Reliability Test

Test specification (01-TE-01-xxx).

Including 26 items of appearance requirements, electrical performance, environmental test, mechanical performance, Material performance and Soldering performance. e.g.

Voltage Protection Level Up Test.

Limited Current Abnormal Overvoltage Test.

High temperature and high humidity test

Tensile Test.

Solderability Test.

etc.

OQC (Outgoing Quality Control)

AQL(MIL-STD-105E), Packaging, Labeling, Quantity Inspection.

Agency

Agency (Safety Certificate) Annual, Quarterly Audits.

Management System

ISO9001, (TUV approved and issued certificate).

ISO14001, ISO45001, etc.

Click to view the certificate

Environmental

RoHS & REACH Compliant.

SETsafe | SETfuse

Usage

1. Frequency range is from 47 Hz to 63 Hz.

2. The voltage applied continuously to the SPD must not exceed its maximum continuous operating voltage Uc.

3. When atmosphere press is from 45 kPa to 106 kPa, the related altitude shall be from 5000 m to 0 m.

4. Do not touch the product body or wires directly when power is on, to avoid electric shock.

Replacement

As SPD is a non-repairable product, for safety sake, please use the same type of SPD for replacement.

Storage

Do not store SPD at high temperature, high humidity or corrosive gas environment, to avoid oxidation of the wires. Use them up within 1 year after receiving the goods.

Installation

1. Installation and startup may only be carried out by qualified personnel. The relevant country-specific regulations must be observed.

2. Check the device for external damage before installation. If the device is defective, it must not be used.

3. Pay attention to risk of electric shock. Please cutoff all electrical power before installation or service.

4. Lay the output cables to the surge protective devices (SPDs) as short as possible, without loops.

5. Please install proper backup protection devices in front of SPD.

6. Do not apply mechanical stress to the SPD body during or after the installation.

Maintenance

1. Check SPD status according to instructions before and after the thunderstorm season each year.

2. If the indicator of "failure state" appears, the SPD is damaged. Replace the SPD with same type.

3. Ensure electrical connections and mountings are correct before energizing the circuit.

4. SPD`s quality is well controlled and strictly inspected before delivery. If non-functional ones are found during operation, please contact us early enough.

SETsafe | SETfuse