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. 

IP

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

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.

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.

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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. 

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SPD(Low-voltage Power Systems) Catalog

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SPD Business Partner Wanted!

We are specialists in the design and manufacturing SPD products. If you are looking for OEM or ODM support, please contact us.

E-Mail: business_partner@SETfuse.com

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