Lightning-free breaker SPD-LD-B22E3
Lightning-free breaker SPD-Otowa Electric Industry Co., Ltd.

Lightning-free breaker SPD
Otowa Electric Industry Co., Ltd.


About This Product

■Features 1.SPD external separator (MCCB) and SPD are integrated, minimizing wiring inside the panel Integration of the SPD external separator eliminates external wiring between the SPD and separator, significantly reducing wiring man-hours. Optimal lightning protection is achieved by keeping the wiring as short as possible. 2. Equipped with an inspection disconnect function that allows inspection while the main breaker is energized. Molded case circuit breaker (MCCB): When replacing or inspecting the SPD unit, the circuit breaker is operated to open the circuit and work can be done without voltage. 3. Great protection ability Voltage protection level is below 1,300V, impulse current Iimp25kA, protects facilities and equipment from damage caused by direct lightning strikes. 4.Only the SPD part can be replaced 5. Excellent responsiveness and no follow current Response speed: 3nsec or less 6. Comes with a safety function even when it deteriorates ・Two-stage protection function (SPD internal automatic disconnection device operates, SPD external separator trips) ・With SPD function display ・Supports degraded contact output (LD-B22E3S only) 7. Compatible with RoHS regulated substances

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    Lightning-free breaker SPD

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2 Models of Lightning-free breaker SPD

Items marked with have different values depending on the model number.

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Product Image Part Number Price (excluding tax) Contact operation (c contact) Enclosure protection class (IP code) Frame Impulse current (10/350μs) Installation method Maximum continuous working voltage (50/60Hz) Maximum working voltage/current Nominal discharge current (8/20μs) Operating temperature range Rated impulse withstand voltage Rated short circuit current Usable wires Voltage protection level Wire range used
Lightning-free breaker SPD-Part Number-LD-B22E3

LD-B22E3

Available upon quote A contact (ALa1-ALc1)... Normal: OFF Deteriorated: ON
b contact (ALb1-ALc1)...Normal: ON When degraded: OFF
IP20 225AF/225AT 25kA Screw installation Single-phase 3-wire 110/220V AC, 3-phase 3-wire 250V AC AC250V/3.0A DC125V/0.4A 25kA -5℃~+40℃ 8kV 80kA Stranded wire 0.5mm2~2.0mm2 (AWG20~AWG14) 1,300V or less 8mm2~22mm2
Lightning-free breaker SPD-Part Number-LD-B22E3S

LD-B22E3S

Available upon quote A contact (ALa1-ALc1)... Normal: OFF Deteriorated: ON
b contact (ALb1-ALc1)...Normal: ON When degraded: OFF
IP20 225AF/225AT 25kA Screw installation Single-phase 3-wire 110/220V AC, 3-phase 3-wire 250V AC AC250V/3.0A DC125V/0.4A 25kA -5℃~+40℃ 8kV 80kA Stranded wire 0.5mm2~2.0mm2 (AWG20~AWG14) 1,300V or less 8mm2~22mm2

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