Released 2013

Features of FTA-50

Space-saving type
Maximum input voltage 528VAC: 10% fluctuations in voltage 480VAC
Selectable leakage current value

Ordering Information and Options

FTA(1)  -  50(2)  -  683(3)  -  (4)  

(1) Model Name
(2) Rated Current
(3) Line to ground capacitor code
  Refer to Product Line-up.
  * When the line to ground capacitor code is different, the attenuation characteristic is
(4) Option
  H:Ultra high attenuation type
    335 is not applied.
  U:lmprove differential mode attenuation (Rated voltage 250V)
  G:With switch of line to ground capacitor
    Only 335 is applied.
    * Leakage current
        Switch state is ON (switched to “|”) 160mA/250mA max
        Switch state is OFF (switched to “○”) 10μA/16μA max

Product Line-up

Product Name Leakage Current* Line to ground capacitor
(nominal value)
FTA-50-223 1.0mA/2.0mA max 22,000pF
FTA-50-683 2.5mA/5.0mA max 68,000pF
FTA-50-104 3.5mA/7.0mA max 100,000pF
FTA-50-335 160mA/250mA max 3.3μF
  • * Input 250/500VAC 60Hz ( input 250/400VAC 60Hz in case of 335)


Contents Specifications
Rated Voltage Three-phase Three-wire 500V 50/60Hz
Rated Current 50A
Operating Temperature -40 to +85℃ (Refer to Derating Curve)
Agency Approvals UL1283, CSA C22.2 No.8 (C-UL) , DIN EN60939 VDE0565 Teil3-1, ENEC
Others Dimensions (WxHxD) 65x84x153 mm [2.56x3.31x6.02 inches]
(Option: -G refer to external view)
Weight 1.2kg max
Warranty Period 5-year
  • * For further information and how to use, please see in Cosel product catalog.

Circuit Diagram

Derating Curve

Documents Download

Technical Data
  • * For another documents aren't listed, please feel free to contact to a Cosel representative.

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  • * For further information and how to use, please see in Cosel product catalog.
Table1 Product Status Information
No. Product Status Definition
1 New Product New Product. Recommended for new design.
2 Recommended Recommended for new design.
3 blank Product in mass production
4 NRND Not recommended for new design.
5 To be discontinued PDN (Product Discontinuation Notice) is issued and LTB (Last Time Buy) is under consideration.
6 Discontinued LTB order is no longer available.