Protective 3BF filter unit for installation in rail connections numeric code autolock AC voltage restrictions on pulse rectifier RWI track relay 110 short-circuit isolating joints, as well as for the protection of track relays from pulse influence the traction current harmonics.

AC filter resistance:

• at a current of 20 mA, 50 Hz, not more than 70 Ohm

• 100 1000 Hz
• 150 1600 Hz
• 200 2500 Hz
• 300 4000 Hz
• 400 Hz 5200

Overall dimensions, mm, not more 235h80h152