LY1-D20M/2(S) PLUGGABLE SINGLE-POLE SPD

Description：

Classll·Class lll·Type 2 ·Type 3
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 ll+lll /Type 2+3
Protective Elements: High Energy MOV
Housing: Pluggable DesignCompliance: lEC 61643-11:2011
EN 61643-11:2012

Our mini size 20kA 2P GDT AC surge protective device is specially developed for compact single-phase AC power systems that require effective surge protection with minimal installation space. As a professional manufacturer, factory, and OEM/ODM supplier, we provide this model to global wholesalers and distributors who need reliable AC surge protection solutions for bulk buy, in bulk, and wholesale orders. This SPD uses a high-quality gas discharge tube (GDT) filled with Ne (neon) gas, offering extremely fast response time and exceptional insulation performance. Compared to traditional MOV-only devices, the GDT structure provides lower leakage current, higher stability, and longer operational life, making it ideal for environments with medium surge risk.

The product is built with a durable PVC/PA66/PBT housing, ensuring high dielectric strength, flame retardancy, and resistance to heat and impact. The 2-pole structure protects L + N lines in single-phase AC networks, suitable for small distribution boxes, automation control panels, building electrical systems, smart home power supplies, UPS systems, and AC outputs of solar inverters or energy storage systems. Its mini size design significantly reduces installation space, making it popular for compact power cabinets and dense rail-mounted configurations.

Our production follows strict international standards, including IEC 61643-11:2011 / EN 61643-11:2022, and every unit carries CE and TUV certifications, ensuring compliance, durability, and global market acceptance. As a professional manufacturer, we support full OEM and ODM customization, including circuit parameter adjustments, logo printing, private label branding, housing color customization, and packaging design. For global distributors and wholesalers looking for dependable, compact, and factory-direct AC surge protection devices, this mini size 20kA 2P GDT SPD is a highly competitive and reliable choice.

Applicable scenarios / Application industries

Engineered for 35mm DIN-rail installation, this device ensures quick mounting, easy maintenance, and compatibility with standard modular power distribution systems. Although compact, it delivers a reliable 20kA surge capacity, providing essential protection against lightning-induced surges and switching transients. This makes it an excellent fit for residential, commercial, and light industrial electrical environments where safety, reliability, and panel space optimization are priorities.

■ 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	10 kA
Maximum Discharge Current (8/20 μs)	Imax	20 kA
Voltage Protection Level	Up	0.2 kV	0.6 kV	1.3 kV	1.5 kV	1.5 kV	1.8 kV
Response Time	tA	< 25 ns
Back-Up Fuse (max)		125 A gL / gG
Short-Circuit Current Rating (AC)	ISCCR	10kA
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-D20M/2(S) PLUGGABLE SINGLE-POLE SPD

1.What makes the LY1-D20M/2(S) suitable for single-phase AC systems?
The LY1-D20M/2(S) is a Type 2 pluggable single-pole SPD designed for low-voltage AC mains lines in residential and commercial installations, providing fast clamping and surge suppression using reliable MOV technology.

2.Can this SPD be easily maintained?
Yes. This model features a plug-in replaceable MOV module, allowing technicians to quickly swap protective cartridges without rewiring the entire system.

3.What surge protection technology is used inside?
It uses MOV (Metal Oxide Varistor) cores optimized for transient surge absorption and minimal residual voltage.

4.Where is this SPD typically installed?
Ideal for AC distribution panels, branch circuits, service panels, control cabinets, and other systems requiring local surge protection.

5.Does the LY1-D20M/2(S) meet global standards?
Yes, it is manufactured in line with IEC 61643-11:2011 / EN 61643-11:2022, and holds CE and TUV certifications.

6.Does it include a visual operation indicator?
Yes. A status window clearly shows operation and failure states to notify maintenance teams.