Current Transformers

Low-Voltage Current Transformers (0.72 kV Max)

Widely used internationally in revenue and switchboard applications by engineering, construction, and power companies, APSC Current Transformers are the result of over 40 years of manufacturing expertise, combined with technology transferred from Messwandler-Bau (MWB) of Germany.

The primary insulation material for APSC's current transformers is the Araldite® epoxy resin, known for its reliability. The outdoor models make use of cycloaliphatic epoxy resin, similarly to ensure high-quality insulation.

APSC's current transformers, including OEM/ODM products, are type-tested and routine-tested by APSC-owned, TAF-accredited Advanced Electricity Laboratory (TAF, or Taiwan Accreditation Foundation, is a member of ILAC and a signatory to the ILAC MRA).

ABS-Encapsulated Low-Voltage Current Transformers for Indoor Use (Window-Type)

For 600V (max.) power systems, these ABS-encapsulated window-type current transformers are suited to electric engineering applications and distribution switchgears. Each contains a high-quality coil and an annealed oriented core.
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Low-Voltage Resin-Insulated Current Transformers for Indoor Use (Window-Type)

Current transformers with a Primary Current of 100A~3200A. Burden & Accuracy: 15~30VA/1.0CL. Wiring with insulated wire or a busbar on the primary side. Alternative billing-purpose usage. Many window sizes.
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Single-Core Low-Voltage Current Transformers (Rectangular Window-Type)

1 core. Rectangular, low-voltage, resin-insulated current transformers for switchgear-panel makers et al. For use with measuring or monitoring instruments. This current transformer can be mounted on a busbar or fixed directly to the switchgear panel.
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Two-Core Low-Voltage Current Transformers (Rectangular Window-Type)

2 cores. Rectangular, low-voltage, resin-insulated current transformers for switchgear-panel makers et al. Dual-purpose current transformer, for use with measuring or monitoring instruments in addition to protective relays (simultaneously). This current transformer can be mounted on a busbar or fixed directly to the switchgear panel.
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Split-Core Low-Voltage Current Transformers (Rectangular Window-Type)

Split-core, rectangular, low-voltage, resin-insulated protective current transformers for switchgear-panel makers et al. Installs easily onto an existing power system.
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ABS-Encapsulated Split-Core Current Transformers (Rectangular Window-Type)

ABS-encapsulated and rectangularly shaped, these split-core, window-type, low-voltage current transformers are self-extinguishing and have a high level of insulation and moisture resistance.
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Low-Voltage Epoxy-Cast Current Transformers for Indoor Use (Window-Type )

For the need of a higher current ratio and accuracy. A greater window diameter facilitates installation and wiring in a high-current application. Multi-ratio models available. Araldite® epoxy.
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Bushing Current Transformers for 23kV C-GIS

These epoxy-cast multi-ratio bushing current transformers (BCTs, or bushing CTs) are typically installed in 23 kV C-GIS (cubicle-type gas-insulated switchgear) for use with measuring or monitoring instruments, or protective relays.
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Zero-Phase Current Transformers (ZCT) for Ground-Fault Protection

Designed to protect the power system against leakage and earth faults, these zero-phase current transformers (ZCT) come in various window diameters. Epoxy-cast coil.
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