Item No.: LY1-C40M/2(S)

LY1-C40M/2(S)PLUGGABLE SINGLE-POLE SPD

Description：

Classl·Classll·Type 1·Type 2
Location of Use: Sub-Distribution Boards
Mode of Protection: L-PE, N-PE
Surge Ratings: In = 10 kA (8/20 μs)
IEC/EN/UL Category: Class l+ll /Type 1+2
Protective Elements: High Energy MOV
Housing: Pluggable Design
Compliance: lEC 61643-11:2011
EN 61643-11:2012

Our mini size 40kA 2P GDT AC surge protective device is engineered for applications that require compact construction and high surge discharge capability. As a professional manufacturer, factory, and OEM/ODM supplier, we provide wholesale and bulk buy / in bulk solutions to global clients in the AC power protection industry. This model uses a high-performance gas discharge tube (GDT) filled with non-active Ne (neon) gas, delivering extremely fast response time and stable performance under lightning or switching surges. Unlike MOV-only structures, GDT protection offers higher insulation resistance and lower leakage current, making it ideal for sensitive equipment, small control panels, and space-limited power distribution boxes.

The enclosure is made of PVC/PA66/PBT, offering excellent electrical insulation, heat resistance, and mechanical durability. It is designed for 35mm DIN-rail installation, making the device suitable for modular power systems, automation cabinets, and compact distribution units. The 40kA surge capacity ensures reliable protection for residential, commercial, and industrial AC systems. Each unit is built strictly according to IEC 61643-11:2011 / EN 61643-11:2022, and is certified by CE & TUV, ensuring safe operation and long-term reliability.

Applicable scenarios / Application industries

This 2-pole design fits L+N configurations in single-phase circuits and can be used in power supply, equipment cabinets, solar inverter AC output, UPS systems, and similar applications. Ideal for wholesalers and distributors looking for high-quality, factory-direct protection devices with competitive pricing and strong OEM customization capability. Our production line also supports logo printing, housing color customization, and OEM circuit parameters to match customer requirements. With proven performance and compact dimensions, this mini size 40kA GDT SPD is a smart choice for those seeking a reliable and space-saving surge protection solution.

■ Technical Data
IEC Electrical		75	150	275	320	385	440
Nominal AC Voltage (50/60Hz)	Uo/ Un	60 V	120 V	230 V	230 V	230 V	400 V
Maximum Continuous Operating Voltage (AC)	Uc	75 V	150 V	275V	320 V	385 V	440 V
Nominal Discharge Current (8/20 μs)	In	20 kA	20 kA	20 kA	20 kA	20 kA	20 kA
Maximum Discharge Current (8/20 μs)	Imax	40 kA	40 kA	40 kA	40 kA	40 kA	40 kA
Impulse Current (10/350μs)	Iimp	7kA
Voltage Protection Level	Up	0.4 kV	1 kV	1.5 kV	1.6 kV	1.8 kV	2 kV
Response Time	tA	< 25 ns
Back-Up Fuse (max)		63 A gL / gG
Short-Circuit Current Rating (AC)	ISCCR	25kA
TOV Withstand 5s	UT	90V	180V	335V	335V	335V	580V
TOV 120min	UT	115V	230V	440V	440V	440V	765V
	mode	Withstand	Withstand	Safe Fail	Safe Fail	Safe Fail	Safe Fail
Mechanical & Environmental
Operating Temperature Range	Ta	-40ºF to +158ºF [-40ºC to +70ºC]
Permissible Operating Humidity	RH	5%…95%
Atmospheric pressure and altitude		80k Pa … 106k Pa / -500 m…… 2000 m
Terminal Screw Torque	Mmax	39.9 Ibf·in[4.5 Nm]
Conductor Cross Section (max)		2 AWG (Solid, Stranded) / 4 AWG (Flexible)
		35 mm² (Solid, Stranded) / 25 mm²(Flexible)
Mounting		35 mm DIN Rail, EN 60715
Degree of Protection		IP 20 (built-in)
Housing Material		Thermoplastic: Extinguishing Degree UL 94 V-0
Thermal Protection		Yes
Operating State / Fault Indication		Green ok / Red defect
Remote Contacts (RC) RC Switching Capacity RC Conductor Cross Section (max)		Optional AC: 250V / 0.5 A; DC: 250V / 0.1 A;125V / 0.2 A;75V / 0.5 A 16 AWG (Solid) / 1.5 mm²(Solid)

■ Internal Configuration

■ Dimensions & Packaging

■ Connection Diagram

FAQ for LY1-C40M/2(S)PLUGGABLE SINGLE-POLE SPD

1. What is the main feature of the LY1-C40M/2S SPD?

The C40M series uses an upgraded high-energy MOV module that provides enhanced response speed and thermal stability compared with standard versions.

2. Is this device suitable for AC mains protection?

Yes. It is designed for AC low-voltage power systems (single-phase) and serves as a Type 2 surge protector for distribution panels and final circuits.

3. Does this SPD include a thermal disconnection mechanism?

Yes. The device integrates a built-in thermal fuse that disconnects the MOV safely when overloaded, ensuring high reliability and preventing fire risk.