BK Series DIN SPD (UL)

The BK Series DIN Type Surge Protective Device (SPD) is UL-certified and designed to protect power systems and sensitive electrical equipment from lightning and switching surges. With a compact DIN-rail design, the SPD is suitable for a range of AC power system applications, including industrial panels, commercial facilities, OEM equipment, and EV charging infrastructure. The BK Series provides reliable surge protection performance and supports overall system reliability.

Imax: 20 – 80 kA
In: 10 – 40 kA
Up: ≤ 2.5 kV

Key Features

Reliable Surge Protection

Protects electrical systems from lightning and switching surges.

MOV-Based Protection Technology

Maintains high impedance during normal operation and rapidly clamps transient surge voltage.

Visual Status Indication

A red indicator supports status notification when the protective features of the device operate or a fault occurs.

Wide System Compatibility

Supports various AC grounding systems and power applications.

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pd.solution@lselectricamerica.com

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Lineup

	BK05S-T3	BK10S-T2	BK40S-T2
Type	Type 3	Type 2	Type 2
Pole	2, 4P	1, 1+N, 2, 3, 3+N, 4P	1, 1+N, 2, 3, 3+N, 4P
Max. cont. operating voltage	385V AC	385V AC	385V AC
Max. discharge current	5kA	20kA	80kA
Nominal discharge current	-	10kA	40kA
Level of protection	≤0.8kV	≤1.5kV	≤2.5kV
Response Time	≤ 25ns	≤ 25ns	≤ 25ns

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