DC 48V, 65V, 75V DC Surge Protective Device SPD Surge Protector Type 1+2, T1+T2, Type 2, T2, Class B+C, Class C

For Photovoltaic PV solar and DC applications DC 48V, 65V, 75V DC Surge Protective Device SPD Surge Protector Type 1+2, T1+T2, Type 2, T2, Class B+C, Class C, Iimp = from 4 kA to 25 kA (10/350 μs), Imax = from 40 kA to 100 kA (8 /20 μs), with changeover contact.

  • Monoblock and Pluggable Design.
  • Visual Indication: Green=OK, Red=Replace.
  • Remote alarm contact to make status monitoring easy.
  • Quick thermal response for self-protection.
  • Voltage protection level (Up): 0.5kV/0.3kV.
  • Type 1, T1, Class B, Class I Iimp(10/350 μs): from 4 kA to 25 kA.
  • Type 2, T2, Class C, Class II, Imax(8/20μs): from 40 kA to 100 kA.
  • Undc: 48Vdc
  • Ucdc: 65Vdc/75Vdc.

DC 48V, 65V, 75V DC Surge Protective Device SPD Surge Protector Type 1+2, T1+T2, Type 2, T2, Class B+C, Class C is suitable for photovoltaic applications. These SPDs are designed and tested according to DC T1+T2 & T2 classification from IEC/EN 61643-11 / IEC/EN 61643-41.

The indication front window helps users to know the status of the device and the remote-signal port is able to provide remote indication and alarm.

48Vdc power Surge Protector


IEC Electrical
Rated Operational DC Voltage Uo / Un48 Vdc
Connection modeDC+/PE or DC-/PEDC+/DC- and DC+/PEDC+/PE or DC-/PEDC+/DC- and DC+/PEDC+/PE or DC-/PEDC+/DC- and DC+/PE
Protection mode(s)CMCM/DMCMCMCMCM
Max. PV operating voltage Ucdc75 Vdc75 Vdc65 Vdc65 Vdc65 Vdc65 Vdc
Residual current – Leakage current at Uc Ipe< 0.1 mAwithout< 0.1 mA< 0.1 mA< 0.1 mA< 0.1 mA
Nominal Discharge Current – 15 x 8/20 μs impulses In25 kA25 kA/50 kA20 kA20 kA20 kA20 kA
Maximum Discharge Current Max. withstand 8/20 μs Imax100 kA100 kA50 kA50 kA40 kA40 kA
Impulse Discharge Current Max. withstand 10/350 μs Iimp25 kA25 kA/50 kA7 kA7 kA4 kA4 kA
Impulse Discharge Current Max. withstand 10/350 μs Itotal50 kA14 kA8 kA
Voltage Protection Level Up0.5 kV0.5 kV/1.5 kV0.3 kV0.3 kV0.3 kV0.3 kV
Response Time tA< 25 ns
Number of Ports1
Mechanical & Environmental
Operating Temperature Range Ta-40 ºF to +158 ºF [-40 ºC to +70 ºC]
Permissible Operating Humidity RH5%…95%
Atmospheric pressure and altitude80k Pa … 106k Pa / -500 m … 2000 m
Terminal Screw Torque Mmax39.9 Ibf·in [4.5 Nm]
Conductor Cross Section (max)

2 AWG (Solid, Stranded) / 4 AWG (Flexible)

35 mm2 (Solid, Stranded) / 25 mm2 (Flexible)

Mounting35 mm DIN Rail, EN 60715
Degree Of ProtectionIP 20 (built-in)
Housing MaterialThermoplastic: Extinguishing Degree UL 94 V-0
Thermal ProtectionYes
Operating State / Fault IndicationGreen ok / Red defect
Remote Contacts (RC)Optional
RC Switching CapacityAC: 250V / 0.5 A; DC: 250V / 0.1 A; 125 V / 0.2 A; 75 V / 0.5 A
RC Conductor Cross Section (max)16 AWG (Solid) / 1.5 mm2 (Solid)
Order Information
Order Code


without remote contacts250751125075130706511070652140065114006521
with remote contacts250751225075140706512070652240065124006522
spare modules0706501070650140065014006501


Q1: Selection of surge protector

Al: The grading of the DC Surge Protector Device T2 (commonly known as lightning protection) Is assessed according to the IEC 61643-11 / EN 61643-11 / EN 50539 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 IEC 61643-11 / EN 61643-11 / EN 50539 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 a specific time should be based on the order quantity.

Packaging & Shipping

Packaging & Shipping

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