Specifications

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Din Rail AC Power Surge Protectors
DS Surge Protectors
CITEL DS AC power Surge Protective Devices (SPD) are
designed to meet all surge protection needs for low voltage
installations.
Designed for mounting on DIN rails, these protectors are
easy to install in standardized panels and cabinets and are
equipped with thermal disconnection devices and indicators
allowing total operating safety.
DS surge protectors are available with several protection
diagrams to comply with different installation needs and
standard requirements.
CITEL AC power surge protectors offer three levels of surge
protection corresponding to different IEC or EN classes.
Standards
To ensure efficient and reliable performances, all CITEL´s AC
power surge protectors comply with the leading standards.
Relevant standards in the AC surge protection field could be
split into 3 types of documents :
●
<< Product >> standards :
These documents address the type of tests the SPD manufacturer
must apply on its devices :
- Europe : EN 61643-11
- International : IEC 61643-11
- USA : UL1449-2ed
- France : NF EN 61643-11
●
<< Installation >> standards :
These documents give the main information about AC power
surge protectors and its proper installation:
- International : IEC 61643-12 guide
- USA : IEEE C62-41
- France : UTE C15-443 guide
●
<<
Selection >>
standards :
They define the basic rules to select the surge protector in
accordance with the general electrical code :
- Germany : DIN VDE 0100 part 443 and 534
- International : IEC 60364-4-433 and 5-534
- France : NF C 15-100 sect. 443 and 534
Operating principle
DS surge protectors are based on zinc metal-oxide varistors
(MOV), the best compromise between a fast response time
(< 25 ns) and a high discharge current capacity, which are
the main parameters to provide an efficient protection.
Nevertheless the end of life of these varistors must be
absolutely monitored, requiring the systematic use of built-in
thermal disconnection devices (see
<<Disconnection devices>>).
DS40 surge protector diagram