AC Surge Protective Device T2 Class C Type 2, Class II SLP40 series

Transient and power frequency overvoltage protection
Surge protection devices (SPD) Electrical power supply networks to IEC/EN (DIN rail)
Type 2 / Class C / Class II for use in AC power supply systems

Surge protection portfolio includes solutions for protecting systems up to 1,000 V a.c. against surges caused by atmospheric discharge and switching operations.

Type 2 / Class II

Ability to discharge induced voltage surges (8/20 μs). Suitable for the second level of protection in supply distribution panels in which Type 1 protectors are installed, or for the first level of protection for applications not exposed to direct strikes and with no external lightning protection system. EN 61643-11 / IEC 61643-11.

LSP is the line of AC power surge protectors is designed to cover all possible configurations in low voltage installations. They are available in many versions, which differ in:

– AC Surge Protective Device T2
– AC network configuration (Single/3-Phase)
– Discharge currents (Iimp, Imax, In)
– Protection technology (varistors, GDT)
– Features (plug-in, remote signaling, compact)

The AC Surge Protective Device T2 Class C SLP40 line is a group of Class II Surges Protective Devices. They are intended as a protection against transient overvoltage caused by fast switching operations or indirect hits of lightning strokes (residuum effects).

It is recommended to install Class II SPDs every 10 – 20 meters of cable length repetitively, typically to main and sub-distribution boards. The SLP40-440 are designed for direct coordination with Class I SPDs of line FLP25. In the case of SLP40-275, the coordination with the line FLP25 is done by means of 10 m cable length.

The design of AC Surge Protective Device T2 is based on Metal Oxide Varistors. Such a design provides a very low response time. The modular design with plug-in inserts allows simple and quick replacement of function modules in case of MOV is beyond if its lifespan due to often occurrence of overvoltage peaks.

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General parameters

Suitable for protection of electrical installations against transient overvoltage

Plug-in module design

Indication window helps users to know the status of device

Optional remote-signaling contact

Electrical parameters
	1+0, 2+0, 3+0, 4+0, 1+1, 2+1, 3+1 (L-N/PE/PEN connection)			1+1, 2+1, 3+1 (X+1 N-PE connection)
SPD according to EN 61643-11 / IEC 61643-11	Type 2 / Class II
Technology	MOV (Varistor)			GDT (Spark-gap)
Nominal a.c. voltage U_n	60 V AC ①	120 V AC ②	230 V AC ③	230 V AC
	230 V AC ④	230 V AC ⑤	400 V AC ⑥
	480 V AC ⑦	690 V AC ⑧	900 V AC ⑨
Max. continuous operational voltage U_c	75 V AC ①	150 V AC ②	275 V AC ③	255 V AC
	320 V AC ④	385 V AC ⑤	440 V AC ⑥
	600 V AC ⑦	750 V AC ⑧	1000 V AC ⑨
Nominal frequency f	50 / 60 Hz
Nominal discharge current I_n (8/20 μs)	20 kA
Max. impulse current I_imp (10/350 μs)	–			12 kA
Max discharge current I_max (8/20 μs)	40 kA
Voltage protection level U_p	0.4 kV ①	1.0 kV ②	1.5 kV ③	1.5 kV
	1.6 kV ④	1.8 kV ⑤	2.0 kV ⑥
	2.5 kV ⑦	2.6 kV ⑧	4.2 kV ⑨
Voltage protection Up at 5 kA (8/20 μs)	≤ 1 kV			–
Follow current extinguishing capability I_fi	–			100 Arms
Temporary overvoltage (TOV) (U_T ) – Characteristic (withstand)	90 V / 5 sec ①	180 V / 5 sec ②	335 V / 5 sec ③	1200 V / 200 ms
	335 V / 5 sec ④	335 V / 5 sec ⑤	580 V / 5 sec ⑥
	700 V / 5 sec ⑦	871 V / 5 sec ⑧	1205 V / 5 sec ⑨
Temporary overvoltage (TOV) (U_T ) – Characteristic (safe failure)	115 V / 120 min ①	230 V / 120 min ②	440 V / 120 min ③	–
	440 V / 120 min ④	440 V / 120 min ⑤	765 V / 120 min ⑥
	915 V / 120 min ⑦	1143 V / 120 min ⑧	1205 V / 120 min ⑨
Residual current at U_c I_PE	≤ 1 mA			–
Response time t_a	≤ 25 ns			≤ 100 ns
Max. mains-side over-current protection	125 A gL/gG			–
Short-circuit current rating I_SCCR	25 kArms			–
Number of ports	1
Type of LV system	TN-C, TN-S, TT (1+1, 3+1)
Remote contact (optional)	1 changeover contact
Remote signalling alarming mode	Normal: closed; Failure: open-circuit
The prospective short-circuit current according to 7.1.1 d5 of IEC 61643-11	5 A
Protection function	Overcurrent
Remote contact op. voltage / current AC U_max / I_max DC U_max / I_max	250 V AC / 0.5 A 250V / 0.1 A; 125 V / 0.2 A; 75 V / 0.5 A

Mechanical parameters
Device length	90 mm
Device width	18, 36, 54, 72 mm
Device height	67 mm
Method of mounting	fixed
Operating state / fault indication	green / red
Degree of protection	IP 20
Cross-sectional area (min.)	1.5 mm² solid /flexible
Cross-sectional area (max.)	35 mm² stranded / 25 mm² flexible
For mounting on	35 mm DIN rail acc. to EN 60715
Enclosure material	thermoplastic
Place of installation	installation indoor
Range of operating temperatures T_u	-40 °C … +70 °C
Atmospheric pressure and altitude	80k Pa … 106k Pa, -500 m … 2000 m
Humidity range	5% … 95%
Cross-sectional area for remote signalling terminals	max. 1.5 mm² solid / flexible
Accessibility	Inaccessible

FAQ

Q1: Selection of surge protector

Al: The grading of the surge protector (commonly known as lightning protection) Is assessed according to the IEC61024 subdivision lightning protection theory, which is installed at the junction of the partition. Technical requirements and functions differ. The first-stage lightning protection device is installed between the 0-1 zone, high for the flow requirement, the minimum requirement of EN 61643-11 / IEC 61643-11 is 40 ka (8/20), and the second and third levels are installed between the 1-2 and 2-3 zones, mainly to suppress the overvoltage.

Q2: Are you a lightning surge protectors factory or lightning surge protectors trading company?

A2: We are a lightning surge protectors manufacturer.

Q3: Warranty and services:

A3:1. Warranty 5 years

2. lightning surge protectors products and accessories have been tested 3 times before ship out.

3. We own the best after-sale service team, if any problem happens, our team will do our best to solve it for you.

Q4: How can I get some lightning surge protectors samples?

A4: We are honored to offer you lightning surge protectors samples, pis contact our staff, and leave detailed contact information, we promise to keep your information confidential.

Q5: Is the sample available and free?

AS: Sample is available, but the sample cost should be payable by you. The cost of the sample will be refunded after further order.

Q6: Do you accept customized order?

A6: Yes, we do.

Q7: What’s the delivery time?

A7: It usually takes 7-15days after confirming payment, but the specific time should be based on the order quantity.

AC SPDs T2 SLP40 series