Spring return actuator BF...
Construction BF230-TN-2 TR BF24-TN-ST-2 TR
Supply voltage 230 V AC, 50/60 Hz 24 V AC/DC, 50/60 Hz
Functional range 198 – 264 V AC 19.2 – 28.8 V AC
21.6 – 28.8 V DC
Power rating Spring winding mecha-
nism / hold position
8.5 W / 3 W 7 W / 2 W
Rating 11 VA 10 VA
Run time Actuator / spring return < 120 s / approx. 16 s
Limit switch Type of contact 2 changeover contacts
Switching voltage 5 – 120 V DC / 5 – 250 V AC
Switching current 1 mA ... 6 A
Contact resistance < 100 mΩ
IEC protection class / IP protection II / IP 54 III / IP 54
Storage temperature / ambient temperature -40 to 50 °C / -30 to 50 °C ¹
Ambient humidity ≤ 95% rh, no condensation
Connecting cable Actuator / limit switch 1 m, 2 × 0.75 mm² / 1 m, 6 × 0.75 mm² (free of halo-
gens)
Spring return actuator type BF... for nominal sizes: nominal width 450 – 800 mm.
¹ Up to 75 °C the safe position will definitely be reached.
Technical data
FKR-EU with spring return actuator
Fire damper FKR-EU 15
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