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ONE
8
Product presentation
1. unlocking button
2. blade position indicator
3. LED
4. Battery compartment
(to reset motor)
5. Plug (ST)
List of parts
Description
ONE T 24 FDCU / ONE T 24 FDCB /
1
ONE T 24 FDCU ST / ONE T 230 FDCU /
ONE T 230 FDCB / ONE T 230 FDCU ST
2
Fusible link
3
Fastening screw motor
4
Membrane
5
KIT label (yellow)
Detailed characteristics
ONE
68%
DC
FC
DC
FC
DC
FC
DC : Switch open position re damper
FC : Switch closed position re damper
The spring-return actuator ONE is designed to simply operate Rf-t fire dampers of all sizes,
automatically or remotely.
2
When powered, the actuator moves the damper blade into its stand-by position. When
the power is interrupted or when the temperature in the duct exceeds 72°C, the internal
1
armed spring brings the damper blade back into its safety position. The motor can be reset
4
manually by using a standard 9V battery.
3
An integrated LED indicates the open or closed position of the motor. The (included)
5
beginning and end of range switches indicate the position of the damper blade (on a
controller panel).
Six models are available, 24 or 230 volts, with FDCU (single set of beginning and end of range
switches) or FDCB (double set of beginning and end of range switches) and optionally with
plug (ST).
For fire dampers type CR2, CU2(/B), CU4, CU2-15: An additional kit base plate is required
when changing mechanism type: KIT BPLATE ONE(-X). Examples: type CFTH to ONE (no base
plate present with the original mechanism); type BFL/BFN to ONE (different type of base
plate).
Nominal voltage
ONE T 24 FDCU: 24VAC/DC -10%/+20%
FC
DC
ONE T 24 FDCB: 24VAC/DC -10%/+20%
M
ONE T 24 FDCU ST: 24VAC/DC -10%/+20%
1
2
1
2
3
4
5
6
ONE T 230 FDCU: 230VAC ±15%
ONE T 230 FDCB: 230VAC ±15%
ONE T 230 FDCU ST: 230VAC ±15%
M
Power consumption
1
2
1
2
3
4
5
6
M
4
5
6
1
2
1
2
3
24VDC
Switches
24VAC
N L
230VAC
24VAC/DC: 1mA...1A 60V
230VAC FDCU: 1mA...100mA 230V
230VAC FDCB: 1mA...1A 60V
Actuator
Quantity
1
1
2
1
1
4,2W
24VAC/DC: 0,28W
230VAC: 0,57W
K132-G
01/2025
PATENTED
Running time
motor: (Cabled)
<75 sec
motor: (Battery 9V) <85 sec
spring: 7Nm
<30 sec
Noise level
motor: max 64 dB (A)
spring: max 67 dB (A)
Degree of Ingress Protection
IP 54
Cable cross-section
0,75 mm²
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