HS3 TYPE2 LDSP1-120

120kA Imax Type 2 AC SPD | 60kA In 8/20μs Uc 275‑440V

Name: 120kA Imax Type 2 AC SPD | 60kA In 8/20μs Uc 275‑440V
Brand: Hongxi
SKU: 00252
Rating: 4.9 (176 reviews)

The HS3 Type 2 AC Surge Protective Device (SPD) is a high‑performance surge arrester engineered for low‑voltage power distribution systems. With Imax 120kA (8/20μs), In 60kA, and Uc options from 275V to 440V, it features integrated thermal disconnection, red fault display, optional remote signaling, and 35mm DIN‑rail mounting. Compliant with IEC 61643‑11, it is ideal for industrial plants, commercial buildings, data centers, and critical infrastructure requiring robust Type 2 surge protection.

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Describe Display
Specifications

Describe Display

The HS3 TYPE2 AC LDSP1‑120 series is a robust Type 2 AC surge protective device (SPD) engineered for low‑voltage power distribution systems, offering 60kA In and 120kA Imax (8/20μs waveform), with integrated thermal disconnection, fault display, and optional remote signaling, ensuring reliable overvoltage protection and easy monitoring for industrial, commercial, and data center applications.

Designed to meet IEC 61643‑11 standards, the HS3 series is suitable for TT, TN, and IT earthing systems, providing coordinated protection against induced switching surges and indirect lightning effects. The modular plug‑in design allows quick replacement without rewiring, while the red fault indicator provides a clear visual status at a glance.

Normal Operating & Installation Conditions

Ambient Temperature: -40°C to +85°C (wide industrial range).
Relative Humidity: ≤95% (non‑condensing).
Altitude: ≤2000m (standard).
Pollution Degree: 2 (typical for protected indoor environments).
Installation Type: Fixed, 35mm DIN rail mounting required.
Minimum Wire Size: 2.5mm²; Maximum 25mm² (screw terminal/busbar compatible).
External Backup Protection: SCB or gG fuse rated 125A‑160A required to meet Isccr 25kA.
Earthing Systems: Compatible with TT, TN‑S, TN‑C‑S, and IT systems.

Quality & Compliance

Certified to IEC 61643‑11 / EN 61643‑11 – Class II surge protection.
High discharge capacity – In 60kA / Imax 120kA (8/20μs) meets demanding industrial requirements.
Integrated thermal disconnection – ensures safe failure mode without fire risk.
Red fault indicator – clear visual status; optional remote signaling for BMS integration.
Modular plug‑in design – quick replacement without rewiring, reducing downtime.
RoHS compliant, UL94‑V0 enclosure – environmentally friendly flame‑retardant materials.
Manufactured under an ISO 9001:2015 quality management system.

Specifications

Key Electrical Specifications

Product Series	LDSP1‑120 – Type 2 Surge Protection Device
AC Operating Voltage (Un)	230Vac
Maximum Continuous Operating Voltage (Uc)	275Vac	320Vac	385Vac	440Vac
Temporary Overvoltage TOV‑5s (Ut)	335Vac	335Vac	500Vac	580Vac
Temporary Overvoltage TOV‑120min (disconnection)	440Vac	440Vac	650Vac	770Vac
Nominal Discharge Current (8/20μs) In	60kA
Maximum Discharge Current (8/20μs) Imax	100kA	120kA	120kA	120kA
Voltage Protection Level Up	≤2.0kV	≤2.5kV	≤2.8kV	≤3.0kV
Short‑circuit Current Rating (Isccr) with backup SCB or FUSE	25kA
Response Time (tA)	≤25ns
Thermal Disconnection Device	Integrated
Max. Backup Fuse	125A~160A gG Fuse

Mechanical & Installation Data

Wiring Method	Screw terminal 2.5‑25mm² (busbar wiring possible)
Fault Display	Red (visual indication)
Remote Signal	Optional
Max Remote Signal Load Voltage/Current	250V/0.5A (AC), 30V/3A (DC)
Max Cross‑sectional Area Remote Signal Wire	1.5mm²
Installation	35mm DIN rail
Operating Temperature Range (Tu)	-40°C to +85°C
Protection Level	IP20
Enclosure Material	Thermoplastic, UL94‑V0

Pole Configuration Options & Total Discharge Capacity

Model (Uc)	Protection Mode	In per pole (kA)	Total Imax (kA)	Up (kV)
LDSP1‑120‑275	1+0 (L/N→PE)	60kA	120kA	≤2.2kV/≤2.2kV
	2+0 (L, N→PE)	60kA	240kA	≤2.2kV/≤2.2kV
	3+0 (L→PE)	60kA	360kA	≤2.2kV/—
	4+0 (L, N→PE)	60kA	480kA	≤2.2kV/≤2.2kV
	1+1 (L→N, N→PE)	60kA	120kA	≤2.2kV/≤2.2kV
	3+1 (L→N, N→PE)	60kA	120kA	≤2.2kV/≤2.2kV
LDSP1‑120‑320	1+0 (L/N→PE)	60kA	120kA	≤2.5kV/≤2.2kV
	2+0 (L, N→PE)	60kA	240kA	≤2.5kV/≤2.2kV
	3+0 (L→PE)	60kA	360kA	≤2.5kV/—
	4+0 (L, N→PE)	60kA	480kA	≤2.5kV/≤2.2kV
	1+1 (L→N, N→PE)	60kA	120kA	≤2.5kV/≤2.2kV
	3+1 (L→N, N→PE)	60kA	120kA	≤2.5kV/≤2.2kV
LDSP1‑120‑385	1+0 (L/N→PE)	60kA	120kA	≤2.8kV/≤2.2kV
	2+0 (L, N→PE)	60kA	240kA	≤2.8kV/≤2.2kV
	3+0 (L→PE)	60kA	360kA	≤2.8kV/—
	4+0 (L, N→PE)	60kA	480kA	≤2.8kV/≤2.2kV
	1+1 (L→N, N→PE)	60kA	120kA	≤2.8kV/≤2.2kV
	3+1 (L→N, N→PE)	60kA	120kA	≤2.8kV/≤2.2kV
LDSP1‑120‑440	1+0 (L/N→PE)	60kA	120kA	≤3.0kV/≤2.2kV
	2+0 (L/N→PE)	60kA	240kA	≤3.0kV/≤2.2kV
	3+0 (L→PE)	60kA	360kA	≤3.0kV/—
	4+0 (L, N→PE)	60kA	480kA	≤3.0kV/≤2.2kV
	1+1 (L→N, N→PE)	60kA	120kA	≤3.0kV/≤2.2kV
	3+1 (L→N, N→PE)	60kA	120kA	≤3.0kV/≤2.2kV

Note: For Uc 275V models, Imax is 100kA (as indicated above). All configurations support 35mm DIN rail mounting. Remote signaling and plug‑in modules are optional — contact our sales team for custom configurations.