50 Years of Powering Innovation — Cosel Leads the Way
For over half a century, Cosel has been a trusted name in power supply technology. As one of the industry's top manufacturers, we deliver precision-engineered solutions that keep critical systems running — reliably and efficiently.
What We Manufacture are AC-DC Power Supplies, DC-DC Converters, Power Modules, and EMI Filters.
From factory floors to medical devices, Cosel products power the backbone of innovation across industries.

Please enter the first 3 letters of the part number for product search.
e.g. AC3-TPDD-00 ⇒ AC3，CBS1002405 ⇒ CBS

50 Years of Powering Innovation — Cosel Leads the Way
For over half a century, Cosel has been a trusted name in power supply technology. As one of the industry's top manufacturers, we deliver precision-engineered solutions that keep critical systems running — reliably and efficiently.
What We Manufacture are AC-DC Power Supplies, DC-DC Converters, Power Modules, and EMI Filters.
From factory floors to medical devices, Cosel products power the backbone of innovation across industries.

Single-phase EMI Filter

Series Rated
Voltage		 Rated
Current		 Leakage Current
AC250V 60Hz		 Safety Standard Warranty Feature
EAC 250VAC 3-30A 150μA-1.0mA max 5YR Small-size
Push down type terminal block

Country of Manufacturing: Japan
EAM 250VAC 3-30A 10μA-100μA max 5YR Small-size
Push down type terminal block

Country of Manufacturing: Japan
EAP 250VAC 3-30A 10μA-1.0mA max 5YR Small-size
Push down type terminal block

Country of Manufacturing: Japan
ESC 250VAC 3-16A 150μA-1.0mA max 5YR Small-size
Torque management is unnecessary with screwless

Country of Manufacturing: Japan
ESM 250VAC 3-16A 10μA-100μA max 5YR Small-size
Torque management is unnecessary with screwless

Country of Manufacturing: Japan
ESP 250VAC 3-16A 10μA-1.0mA max 5YR Small-size
Torque management is unnecessary with screwless

Country of Manufacturing: Japan
NBH 250VAC 6-30A 10μA-1.0mA max 5YR Withtand voltage 4,000VAC(Line to ground capacitor code -000 to -471)
Push down type terminal block

Country of Manufacturing: Japan
NBC 250VAC 6-30A 150μA-1.0mA max 5YR Installation compatible with NAC series
Push down type terminal block

Country of Manufacturing: Japan
NBM 250VAC 6-30A 10μA-100μA max 5YR Withtand voltage 4,000VAC
Installation compatible with NAM series
Push down type terminal block

Country of Manufacturing: Japan
NAC 250VAC 4-60A 150μA-1.0mA max 5YR Push down type terminal block

Country of Manufacturing: Japan
NAM 250VAC 4-60A 10μA-100μA max 5YR Push down type terminal block

Country of Manufacturing: Japan
NAH 250VAC 6-60A 10μA-1.0mA max 5YR Push down type terminal block

Country of Manufacturing: Japan
NAP 250VAC 4-60A 10μA-1.0mA max 5YR Push down type terminal block

Country of Manufacturing: Japan

Three-phases EMI Filter

Series Rated
Voltage		 Rated
Current		 Leakage Current
AC250V 60Hz		 Safety Standard Warranty Feature
NEW YAC 500VAC 25-300A 55mA max (Y-connection) 220mA max(300A) 5YR Three-Phase Four-Wire System EMI/EMC Filter
Compact size
High-Attenuation from 150kHz to 1MHz
Meets SCCR 10kA

Country of Manufacturing: Japan
NEW TSD 500VAC 400-1000A 110mA/220mA max (Y-connection) 5YR Input and output terminals : Busbar type
Maximum input voltage 528VAC: 10% fluctuations in voltage 480VAC
Selectable leakage current value

Country of Manufacturing: Japan
FSB 500VAC 10-30A 1.0-12.0/2.0-24.0mA max (It excludes it for Europe) 5YR Improve saturation resistance
Space-saving type
Maximum input voltage 528VAC: 10% fluctuations in voltage 480VAC
Selectable leakage current value
Push down type terminal block

Country of Manufacturing: Japan
TAH 500VAC 4-30A 2.5/5.0mA max 5YR 4-30A
Push down type terminal block

50-150A
Maximum input voltage 528VAC: 10% fluctuations in voltage 480VAC
Selectable leakage current value

Country of Manufacturing: Japan
JAC 500VAC 6-60A 0.5-2.5/1.0-5.0mA max 5YR Push down type terminal block

Country of Manufacturing: Japan
FTA 500VAC 40-150A 1.0-3.5/2.0-7.0mA max (It excludes it for Europe) 5YR Space-saving type
Maximum input voltage 528VAC: 10% fluctuations in voltage 480VAC
Selectable leakage current value

Country of Manufacturing: Japan
TSC 500VAC 400-600A 20mA/40mA max (Y-connection) 5YR Input and output terminals : Busbar type
Maximum input voltage 528VAC: 10% fluctuations in voltage 480VAC

Country of Manufacturing: Japan
FTB 500VAC 80-150A 1.0-12.0/2.0-24.0mA max 5YR Space-saving type
Maximum input voltage 528VAC: 10% fluctuations in voltage 480VAC
Selectable leakage current value

Country of Manufacturing: Japan
TAC 500VAC 4-30A、50-300A 1.0-3.5/2.0-7.0mA max 5YR 4-30A
Push down type terminal block

50-300A
Maximum input voltage 528VAC: 10% fluctuations in voltage 480VAC
Selectable leakage current value

Country of Manufacturing: Japan
TBC 500VAC 50-300A 1.0-3.5/2.0-7.0mA max 5YR Maximum input voltage 528VAC: 10% fluctuations in voltage 480VAC
Selectable leakage current value

Country of Manufacturing: Japan

DC Input EMI Filter

Series Rated
Voltage		 Rated
Current		 Leakage Current
AC250V 60Hz		 Safety Standard Warranty Feature
SNR 50VDC 10A - 5YR Ripple noise attenuation type for switch mode power supplies (DC)
Best filter for switch mode power supplies of analog circuit

Country of Manufacturing: Japan
SNA ±50VDC 1-6A - 5YR Ripple noise attenuation type for switch mode power supplies (DC)
Best filter for switch mode power supplies of analog circuit
(ex. power supply filter for an operational amplifier)

Country of Manufacturing: Japan
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