12.5kA Iimp Type 1+2 SPD | 230Vac Uc 275-440V

HS1 TYPE1+2 AC LDSP1s12.5

12.5kA Iimp Type 1+2 SPD | 230Vac Uc 275-440V | HS1 Surge Arrester

Name: 12.5kA Iimp Type 1+2 SPD | 230Vac Uc 275-440V | HS1 Surge Arrester
Brand: Hongxi
SKU: 00254
Rating: 4.9 (177 reviews)

The HS1 Type 1+2 AC Surge Protective Device delivers combined lightning and surge protection for low‑voltage AC systems. With an impulse discharge current (Iimp) of 12.5kA (10/350µs), a maximum discharge current (Imax) of 50kA (8/20µs), and a rapid response time ≤25ns, it is engineered for high‑exposure environments. Compliant with IEC 61643‑11 and available in five flexible pole configurations (2+0, 3+0, 4+0, 1+1, 3+1).

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Describe Display
Specifications

Describe Display

The HS1 TYPE1+2 AC surge protection device is a high-performance, IEC 61643-11, IEC 61643-21, and IEC 60950-1 compliant protection device engineered for low-voltage AC electrical systems. It delivers reliable combined lightning and surge protection, with a rated impulse discharge current (limp) of 12.5kA (10/350µs wave) and flexible pole configurations (2+0, 3+0, 4+0, 1+1, 3+1) to match diverse application needs.

This SPD provides robust protection against both direct lightning strikes and induced switching surges. Its thermal disconnection device ensures safety during end-of-life conditions. Available in four voltage variants (275V / 320V / 385V / 440V Uc), it adapts to different TN, TT, and IT earthing systems.

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 recommended.
Minimum Wire Size: 2.5mm²; Maximum 25mm² (screw terminal).
External Backup Protection: SCB or gG fuse rated 160A‑200A required to meet Iscr 25kA.

Quality & Compliance

Certified to IEC 61643‑11 / EN 61643‑11 – Class I+II surge protection.
Compliant with IEC 60950‑1 (safety of information technology equipment).
Integrated thermal disconnection device ensures safe end‑of‑life failure mode.
Compact design – fits standard 18mm width per pole, saving panel space.
Manufactured under an ISO 9001:2015 quality management system.
RoHS-compliant, environmentally friendly materials.

Specifications

Key Electrical Specifications

Model Series	LDSP1s12.5 – Type 1+2 Surge Protection Device
AC Operating Voltage (Un)	230Vac
Maximum Continuous Operating Voltage (Uc)	275Vac	320Vac	385Vac	440Vac
Impulse Discharge Current (10/350µs) Iimp	12.5kA	12.5kA	9kA	9kA
Nominal Discharge Current (8/20µs) In	20kA (30kA for some models)
Maximum Discharge Current (8/20µs) Imax	50kA (60kA for some models)
Voltage Protection Level Up	≤1.5kV	≤1.6kV	≤1.8kV	≤2.0kV
Response Time (tA)	≤25ns

Mechanical & Installation Data

Wiring Method	Screw terminal (2.5‑25mm²) / Busbar wiring option
Normal/Fault Display	Green / Red
Remote Signal (Optional)	250V/0.5A (AC), 30V/3A (DC)
Installation	35mm DIN rail
Operating Temperature Range (Tu)	-40°C to +85°C
Protection Level	IP20
Enclosure Material	Thermoplastic, UL94‑V0

General Data

Short-circuit Current Rating (Iscr) with backup SCB or FUSE	25kA
Max Backup Fuse	160A~200A gG Fuse
Thermal Disconnection Device	Integrated

Pole Configuration Options & Total Iimp Capacity

Model (Uc)	Protection Mode	Iimp per pole (kA)	Total Iimp (kA)	Up (kV)
LDSP1s12.5-275	1+0 (L/N→PE)	12.5	12.5	≤1.5
	2+0 (L, N→PE)	12.5	25	≤1.5
	3+0 (L→PE)	12.5	37.5	≤1.5
	4+0 (L, N→PE)	12.5	50	≤1.5
	1+1 (L→N, N→PE)	12.5	12.5	≤1.5
	3+1 (L→N, N→PE)	12.5	12.5	≤1.5
LDSP1s12.5-320	1+0 (L/N→PE)	12.5	12.5	≤1.6
	2+0 (L, N→PE)	12.5	25	≤1.6
	3+0 (L→PE)	12.5	37.5	≤1.6
	4+0 (L, N→PE)	12.5	50	≤1.6
	1+1 (L→N, N→PE)	12.5	12.5	≤1.6
	3+1 (L→N, N→PE)	12.5	12.5	≤1.6

Note: For Uc 385V and 440V variants, the Iimp per pole is 9kA (total accordingly). Full 25 configuration rows are available in the original product datasheet. Remote signaling and pluggable modules are optional.