

The Class B for 1-Phase Surge Protection Device manufactured by SG Power Products Pvt. Ltd. is a two-section, divisible DIN rail module classified I + II / T1 + T2 to IEC and type T1 + T2 to EN. This combined classification means a single device handles both lightning current and overvoltage duty on TN power supply systems.
The module carries a nominal voltage UN of 24 V AC/DC at a nominal frequency of 50/60 Hz. It measures 71.2 × 95 × 71.2 mm (depth including the 7.5 mm DIN rail) and occupies a horizontal pitch of 4 Div. on the rail.
The housing uses PA 6.6 / PBT insulating material in jet black (RAL 9005) with a UL 94 V-0 flammability rating and IP20 degree of protection when all terminal points are used. It operates and is stored between -40 °C and 80 °C at 5 % to 95 % humidity, withstands 25g shock and 5g vibration, and is tested to IEC 61643-11 and EN 61643-11 with UL/cUL, IECEE CB Scheme and KEMA-KEUR approvals.
| Manufacturer | SG Power Products Pvt. Ltd. |
| Model | Class B for 1-Phase |
| IEC test classification | I + II / T1 + T2 |
| EN type | T1 + T2 |
| Type | DIN rail module, two-section, divisible |
| IEC power supply system | TN |
SG Power offers high-performance Surge Protection Device (SPD) solutions designed to protect electrical systems from lightning currents and transient overvoltages caused by switching operations and indirect lightning effects. The Class B for 1-Phase T1 + T2 module delivers combined protection for industrial, commercial and telecom installations on TN supply systems.
With a two-section divisible DIN rail design and a rugged PA 6.6 / PBT enclosure, the module simplifies installation and servicing while withstanding demanding shock, vibration and temperature conditions.
The SG Power Class B for 1-Phase module is engineered for durable, standards-compliant lightning and surge protection. As a trusted surge protection device manufacturer in India, SG Power delivers dependable overvoltage protection solutions.

24 V AC/DC Single-Phase Supplies
Industrial Control Panels
Telecom & Signalling Equipment
Commercial & Infrastructure Buildings
Solar & Renewable Energy Plants
Data Centers & IT Infrastructure
Type 1 + 2 (T1 + T2) SPD tested to IEC 61643-11
Nominal voltage 24 V AC/DC at 50/60 Hz
Two-section, divisible DIN rail module
Jet black PA 6.6 / PBT housing, UL 94 V-0
UL/cUL, IECEE CB Scheme & KEMA-KEUR approvals
Competitive pricing and expert support
What is the Class B for 1-Phase surge protection device?
It is a combined lightning current and surge arrester of IEC test classification I + II / T1 + T2 (EN type T1 + T2), supplied as a two-section, divisible DIN rail module. It is built for TN power supply systems with a nominal voltage UN of 24 V AC/DC at 50/60 Hz.
What are the dimensions and mounting details?
The module measures 71.2 mm (width) × 95 mm (height) × 71.2 mm (depth, including the 7.5 mm DIN rail) and occupies a horizontal pitch of 4 Div. It mounts directly on a DIN rail.
Does it have a fault indicator?
No — the surge protection fault message for this model is specified as None. Module condition should be verified during scheduled electrical inspection.
What operating conditions does it withstand?
Ambient temperature is -40 °C to 80 °C for both operation and storage/transport, with permissible operating humidity of 5 % to 95 %. It withstands shock of 25g (half-sine / 11 ms / 3x ±X, ±Y, ±Z) and vibration of 5g (10 ... 500 Hz / 2.5 h / X, Y, Z). The degree of protection is IP20, achieved only when all terminal points are used.
What is the housing made of?
The insulating material is PA 6.6 / PBT in jet black (RAL 9005), with a UL 94 flammability rating of V-0.
Which standards and approvals does it carry?
It is tested to IEC 61643-11 and EN 61643-11 and carries approvals including cUL Recognized and UL Recognized (FILE E 330181), IECEE CB Scheme (AT 2905/M1) and KEMA-KEUR (71-148002).
Looking for a reliable T1 + T2 surge protection device in India? SG Power offers dependable SPD solutions for all industries with competitive pricing and timely delivery.
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