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Surge protection device for power supply systems

Surge Protection Devices (SPDs) for power supply systems, also known as transient voltage surge suppressors (TVSS) or lightning arrestors, are critical components designed to protect electrical installations from overvoltage transients caused by lightning strikes, switching operations, or grid disturbances. These devices are characterized by the...

Surge Protection Devices (SPDs) for power supply systems, also known as transient voltage surge suppressors (TVSS) or lightning arrestors, are critical components designed to protect electrical installations from overvoltage transients caused by lightning strikes, switching operations, or grid disturbances. These devices are characterized by their maximum continuous operating voltage (Uc), nominal discharge current (In), and maximum discharge current (Imax), typically available in configurations such as 1P, 2P, 3P, 4P, and 1P+N. They are classified into Type 1 (Class I) for direct lightning strikes, Type 2 (Class II) for switching surges, and Type 3 (Class III) for fine protection at equipment level. SPDs are essential for safeguarding sensitive electronics, motors, and control systems in industrial and commercial environments.

SPDs are deployed in main distribution boards (MDBs), sub-distribution boards (SDBs), and directly at the point of use for critical equipment. They are widely used in sectors such as manufacturing, data centers, telecommunications, renewable energy (solar PV and wind), healthcare, and building automation. In industrial settings, they protect PLCs, variable frequency drives (VFDs), and motor control centers (MCCs) from voltage spikes. For residential and commercial buildings, they ensure the integrity of HVAC systems, lighting controls, and security systems. SPDs are also integral to lightning protection systems in high-exposure areas like airports, towers, and industrial plants.

Key subcategories include Type 1 SPDs (e.g., for main incoming panels), Type 2 SPDs (for sub-distribution), and Type 3 SPDs (for terminal equipment). Common article codes follow patterns like SPD-1-40-275 (Type 1, 40kA Imax, 275V Uc) or SPD-2-20-385 (Type 2, 20kA In, 385V Uc). Other variants include combined Type 1+2 devices and pluggable modules with remote signaling contacts. Products often include thermal disconnectors and visual status indicators for maintenance ease.

At Electric Automation Network, we offer a comprehensive range of SPDs with real-time pricing and detailed technical documentation per article. Our engineering team provides personalized support for selecting the correct SPD type and rating for your application. Enjoy express worldwide shipping and expert advice to ensure your systems are fully protected against transient overvoltages.

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Manufacturer Code Reference Catalog Number Description Delivery Price

5SD7443-1

5SD7443-1

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combination arrester type 1+2 requirement class B+C, Uc 350 V, protective modules, plug-in, 3-pole, 3+0 circuit for TNC systems, with remote display

Combined unloader, requirement class B and C, types 1 and 2, classes I and II, 3 poles, TN-C nets, 75 kA, 350VAC. Cancelations and returns limited. Consult conditions.

 		3 View Availability View Price

5SD7461-1

5SD7461-1

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surge arrester type, 2, requirement class C, Uc 350 V, protective modules, plug-in, 1-pole, L-N circuit, with remote display

Plug-in surge discharger, 350 VAC, TN-C networks, requirement class C, type 2, class II, 1 pole, with remote warning. Cancelations and returns limited. Consult conditions.

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5SD7473-1

5SD7473-1

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surge arrester type, 2, Uc 600 V AC, protective modules, plug-in, 3-pole, 3+0 circuit for IT systems without supplied N-conductor with remote signaling contact

Type 2 narrow surge discharger, 3 poles, pluggable, for TN-C network systems, with remote warning, operating voltage 580 V AC, discharge capacity 15/30 kA, 3 modules. Cancelations and returns limited. Consult conditions.

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176087

SPPVT2-06-2+PE-AX

Y7-176087

Plug-in surge arrester with auxiliary contact, 1000 V DC, 2p+PE, non-earthed

SPPVT2-06-2+PE-AX

Eaton Moeller series xPole - SPPVT2.12 Surge Protection Device. Surge arrester, pluggable, 600V DC, 2-pole+PE, with auxiliary contact

 		2 View Availability View Price

176088

SPPVT2-06-2+PE

Y7-176088

Terminal-Set PE/N max. 63A 2x (2x25mm2 + 27x16mm2)

SPPVT2-06-2+PE

Eaton Moeller series xPole - SPPVT2.12 Surge Protection Device. Surge arrester, pluggable, 600V DC, 2-pole+PE

 		2 View Availability View Price

176089

SPPVT2-10-2+PE-AX

Y7-176089

Plug-in surge arrester with auxiliary contact, 1000 V DC, 2p+PE, non-earthed

SPPVT2-10-2+PE-AX

Eaton Moeller series xPole - SPPVT2.12 Surge Protection Device. Surge arrester, pluggable, 1000VDC, 2-pole+PE, with auxiliary contact

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5SD7461-0

5SD7461-0

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surge arrester type, 2, requirement class C, Uc 350 V, protective modules, plug-in, 1-pole, L-N circuit

Plug-in surge discharger, 350 VAC, TN-C networks, requirement class C, type 2, class II, 1 pole, without remote warning. Cancelations and returns limited. Consult conditions.

 		3 View Availability View Price

5SD7444-1

5SD7444-1

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combination arrester type 1+2 requirement class B+C, Uc 350 V, protective modules, plug-in, 4-pole, 3+1 circuit for TN-S and TT systems, with remote display

Combined unloader, requirement class B and C, types 1 and 2, classes I and II, 4 poles, TT and TN-S networks, 100 kA, 350 VAC. Cancelations and returns limited. Consult conditions.

 		3 View Availability View Price

5SD7414-1

5SD7414-1

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lightning arrester type 1, requirement class B, Uc 350 V, protective modules, plug-in, 4-pole, 3+1 circuit for TN-S and TT systems, with remote display

Lightning current discharger, requirement class B, type 1, class I, 4-pole, TT and TN-S networks, 100 kA, 350 VAC. Cancelations and returns limited. Consult conditions.

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5SD7413-3

5SD7413-3

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lightning arrester type 1/type 2, Un 240/400 V, Uc 335 V AC, protective modules, plug-in, 3+0 circuit (TN-C), width 54 mm with remote signaling,

3-POLE SURGE DISCHARGER, FOR TN-C NETWORK SYSTEMS, 37.5 KA (WITH REMOTE WARNING). Manufactured to order. Non-Cancelable Non-Returnable.

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5SD7413-2

5SD7413-2

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lightning arrester type 1/type 2, Un 240/400 V, Uc 335 V AC, protective modules, plug-in, 3+0 circuit (TN-C), width 54 mm

3-POLE SURGE DISCHARGER, FOR TN-C NETWORK SYSTEMS (WITHOUT REMOTE WARNING), 37.5 kA. Manufactured to customer specifications. Non-Cancelable Non-Returnable.

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5SD7413-1

5SD7413-1

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lightning arrester type 1, requirement class B, Uc 350 V, protective modules, plug-in, 3-pole, 3+0 circuit for TNC systems, with remote display

Lightning current discharger, requirement class B, type 1, class I, 3-pole, TN-C networks, 75 kA, 350 VAC. Cancelations and returns limited. Consult conditions.

 		3 View Availability View Price

2858551

VAL-MS 230IT/3+1-FM

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Type 2 surge arrester

Surge arrester consisting of base element and plug-in protections, for installation on NS 35/7.5, execution: 230 V AC IP system, 3 + 1 circuit.

 		3 View Availability View Price

176092

SPPVT2-10

Y7-176092

Surge arrester plug-in unit, pluggable, 1000V DC, 1p

SPPVT2-10

Eaton Moeller series xPole - SPPVT2.12 Surge Protection Device. Surge arrester plug-in unit, pluggable, 1000V DC, 1p

 		2 View Availability View Price

176091

SPPVT2-06

Y7-176091

Protection surge, with cartridges, with cartridges, 600V DC, 1P

SPPVT2-06

Eaton Moeller series xPole - SPPVT2.12 Surge Protection Device. Surge arrester plug-in unit, pluggable, 600V DC, 1p

 		2 View Availability View Price

176090

SPPVT2-10-2+PE

Y7-176090

Terminal-Set PE/N max. 63A 2x (2x25mm2 + 27x16mm2)

SPPVT2-10-2+PE

Eaton Moeller series xPole - SPPVT2.12 Surge Protection Device. Surge arrester, pluggable, 1000VDC, 2-pole+PE

 		2 View Availability View Price

176096

SPPVT2H-10-2+PE

Y7-176096

Terminal-Set PE/N max. 63A 2x (2x25mm2 + 27x16mm2)

Surge protection, with cartridges, 1000V DC, 2P+N

SPPVT2H-10-2+PE - Surge arrester, pluggable, 1000V DC, 2p+PE

 		2 View Availability View Price

176095

SPPVT2H-10-2+PE-AX

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Plug-in surge arrester with auxiliary contact, 1000 V DC, 2p+PE, non-earthed

Surge Protection, with Cartridges, 1000V DC, 2P+N, with Contact

SPPVT2H-10-2+PE-AX - Surge arrester, pluggable, 1000V DC, 2p+PE, with auxiliary contact

 		3 View Availability View Price

176098

SPPVT2H-10

Y7-176098

Surge arrester plug-in unit, pluggable, 1000V DC, 1p

Surge protection with cartridges, with cartridges, 1000V DC, 1P

SPPVT2H-10 - Surge arrester plug-in unit, pluggable, 1000V DC, 1p

 		2 View Availability View Price

5SD7464-1

5SD7464-1

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surge arrester type, 2, requirement class C, Uc 350 V, protective modules, plug-in, 4-pole, 3+1 circuit for TN-S and TT systems, with remote display

Plug-in surge discharger, 350 VAC, TN-C networks, requirement class C, type 2, class II, N/PE, 4 poles, with remote warning. Cancelations and returns limited. Consult conditions.

 		3 View Availability View Price

5SD7464-0

5SD7464-0

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surge arrester type, 2, requirement class C, Uc 350 V, protective modules, plug-in, 4-pole, 3+1 circuit for TN-S and TT systems,

Plug-in surge discharger, 350 VAC, TN-C networks, requirement class C, type 2, class II, N/PE, 4 poles, without remote warning. Cancelations and returns limited. Consult conditions.

 		3 View Availability View Price

5SD7432-1

5SD7432-1

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Type 3 surge arrester Requirement class D Rated voltage UN 230 V UC 253V AC, 2-pole for 1-phase power supply

 		3 View Availability View Price

5SD7432-4

5SD7432-4

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Type 3 surge arrester Requirement class D Rated voltage UN 24 V UC 34 V AC, 2-pole for 1-phase power supply

 		3 View Availability View Price

5SD7422-1

5SD7422-1

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surge arrester type, 2, requirement class C, Uc 350 V, protective modules, plug-in, 2-pole, 1+1 circuit for TN-S and TT systems, with FRN display, narrow design

Surge discharger, 350 VAC, requirement class C, types 2, class II, 2 poles, TT and TN-S networks, with remote warning. Cancelations and returns limited. Consult conditions.

 		3 View Availability View Price

SA2DFK00M2

SA2DFK00M2

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SURGE PROTECTION DEVICE TYPE 2 FOR PHOTOVOLTAIC APPLICATIONS WITH PLUG-IN CARTRIDGE, EN SHORT-CIRCUIT CURRENT RATING ISCPV 1000A, +, -, PE. WITHOUT CONTACT REMOTE

Surge protection device type 2 for photovoltaic applications with plug-in cartridge, EN short-circuit current rating Iscpv 1000A, +, -, PE. Without remote contact

 		3 View Availability View Price

2858959

VAL-MS 230/3+1/FM-UD

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Type 2 surge arrester

4-channel surge arrester, for mounting on NS 35/7.5, with remote indication contact. 230 V AC

 		3 View Availability View Price

2907043

VAL-US 60/2+0/1U/FM

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Type 2 surge arrester

Universal plug-in surge and lightning current protection device equipped with varistors for 48–60 V DC applications with two conductors and grounding, with remote indication contact

 		3 View Availability View Price

2905646

VAL-MB-T2 1500DC-PV/2+V-FM

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Type 2 surge arrester

Surge protection device for isolated and grounded systems of 1500 V DC photovoltaic 2-pole direct voltage, for rail mounting, with remote indication contact, temperature-controlled protection elements, status message on the module.

 		3 View Availability View Price

2859013

VAL-MS 230/10

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Type 2 surge arrester

Surge arrester consisting of a base element and a plug-in protection with high-power varistor, for mounting on NS 35/7.5, nominal voltage: 230 V AC, 1 channel.

 		3 View Availability View Price

2858548

VAL-MS 230 IT/3+1

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Type 2 surge arrester

Surge arrester consisting of base element and plug-in protections, for installation on NS 35/7.5, execution: 230 V AC IP system, 3 + 1 circuit.

 		3 View Availability View Price

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