RDU5 Series Surge Protection Device

The RDU5 series surge protector is mainly suitable for TN-C, TN-S, TT, IT, and other power supply systems with AC 50Hz/60Hz, nominal discharge current 5kA~60kA, the maximum discharge current 10kA~100kA, rated working voltage 220V/380V and below, to limit and protect lightning overvoltage and surge overvoltage in the power grid. Widely applicable to surge protection requirements in residential, transportation, power, tertiary, and industrial fields.

The product complies with the IEC/EN 61643-11:2011 standard.

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Product Detail

Application

Parameters

Samples & Structures

Dimensions

Product Introduction

The product complies with the IEC/EN 61643-11:2011 standard.

Selection Guide

RDU5

Uc420

Product Code

Protection Level

Maximum Discharge Current

Number of Poles

Maximum sustainable operating voltage

Surge Protective Device

A: Primary protection
B: Secondary protection

A: 15, 25, 50
B: 10、20、40、60、80、100

1P
2P
3P
3P+N
4P

Uc420

The RDU5 series surge protector adopts a varistor with excellent nonlinear characteristics, which is connected between the phase line and neutral line (L-N), phase line and ground line (L-PE), and neutral line and ground line ( N-PE). In the normal state, the surge protector is in a state of extremely high resistance, and the leakage current is almost zero, ensuring the normal power supply of the power system. When the power supply system suffers from overvoltage under the above conditions, the surge protector will immediately conduct in nanosecond time, limit the amplitude of overvoltage to the safe working range of the equipment, and guide the energy of overvoltage to the earth, thus protecting the electrical equipment. Subsequently, the surge protector quickly changes to a high resistance state, which does not affect the normal power supply of the power supply system.

Technical Parameters	Specificatiom
Protection level	A: Primary protection	B: Secondary protection
Rated current In (A)	15、25、50	10、20、40、60、80、100
function	Lightning overvoltage protection, surge overvoltage protection
Number of poles	1P、2P、3P、3P+N、4P
Rated frequency (Hz)	50
Maximum continuous working voltage Ui (v)	420
Maximum amplification current Imax (us)	8/20
Lightning impulse current Limp (u s)	10/350
Short circuit withstand I (kA)	25
Response time (ns)	≤100	≤25
Protection level up (Kv)	2.0、2.5、2.5	1.2、1.5、1.8、2.2、2.4、2.5
Protection level	IP20
Reference Setting Temperature (℃)	30℃
class of pollution	2
Wiring capacity (mm2)	1-35
Operating ambient temperature (℃)	-35-70
Altitude (m)	≤2000
Relative air temperature	When the relative air temperature is+20 ℃, it does not exceed 95% When the relative air temperature is+40 ℃, it shall not exceed 50%;
Installation Category	Level II and III
Installation method	TH35-7.5 installation rail
Incoming method	Upper incoming line

Model No.	Maximum continuous operating voltage UC	Lightning impulse current limp(10/350μs)	Protection level Up （KV）	Response time (ns)	Operating ambient temperature ℃
RDU5-A15	420V	15	2	≤100	-40°C+85°C
RDU5-A25		25	2.5
RDU5-A50		50	2.5

Outline and Installation Dimension

Figure 1 Primary protection

Figure 2 Secondary protection

Technical Parameters	Specificatiom
Protection level	A: Primary protection	B: Secondary protection
Rated current In (A)	15、25、50	10、20、40、60、80、100
function	Lightning overvoltage protection, surge overvoltage protection
Number of poles	1P、2P、3P、3P+N、4P
Rated frequency (Hz)	50
Maximum continuous working voltage Ui (v)	420
Maximum amplification current Imax (us)	8/20
Lightning impulse current Limp (u s)	10/350
Short circuit withstand I (kA)	25
Response time (ns)	≤100	≤25
Protection level up (Kv)	2.0、2.5、2.5	1.2、1.5、1.8、2.2、2.4、2.5
Protection level	IP20
Reference Setting Temperature (℃)	30℃
class of pollution	2
Wiring capacity (mm2)	1-35
Operating ambient temperature (℃)	-35-70
Altitude (m)	≤2000
Relative air temperature	When the relative air temperature is+20 ℃, it does not exceed 95% When the relative air temperature is+40 ℃, it shall not exceed 50%;
Installation Category	Level II and III
Installation method	TH35-7.5 installation rail
Incoming method	Upper incoming line

Model No.	Maximum continuous operating voltage UC	Lightning impulse current limp(10/350μs)	Protection level Up （KV）	Response time (ns)	Operating ambient temperature ℃
RDU5-A15	420V	15	2	≤100	-40°C+85°C
RDU5-A25		25	2.5
RDU5-A50		50	2.5