Specifications are subject to change without notice (27.04.06)
1
Product Description
Timers
True Delay on Release
Type DBB51
Time range 1 to 600 s - capacitor powered
Knob-adjustable time setting
Automatic start after drop-out of power supply
Repeatability:
0.2%
Output: 5 A SPDT relay
For mounting on DIN-rail in accordance with DIN/EN
50 022
17.5 mm DIN-rail housing (DIN 43880)
Combined AC and DC power supply
LED indication for relay status and power supply ON
Multi voltage (true) delay on
release timer.
Time ranges from 1 to 600 s
covered by 3 models.
Housing 17.5 mm wide suit-
able for DIN-rail mounting.
Fits in M36 cover.
Type Selection
Mounting
Output
Time range
Supply: 24 VDC and 24 to 240 VAC
For DIN-rail
SPDT
1 to 10 s
DBB 51 C M24 10S
SPDT
6 to 60 s
DBB 51 C M24 1M
SPDT
60 to 600 s
DBB 51 C M24 10M
Time Specifications
Output Specifications
Time ranges
Type 10 S
1
to
10 s
Type 1 M
6
to
60 s
Type 10 M
60 to 600 s
Repeatability
0.2%
Time variation
Within rated power supply
0.05%
Within ambient temperature
0.2%
Reset
Power supply applied for:
DBB51CM2410S
200 ms
DBB51CM241M,
200 ms
DBB51CM2410M
400 ms
Output
SPDT relay
Rated insulation voltage
250 VAC (RMS)
Contact Ratings (AgSnO
2
)
Resistive loads
AC 1
5 A @ 250 VAC
DC 12
5 A @ 24 VDC
Small inductive loads
AC 15
2.5 A @ 250 VAC
DC 13
2.5 A @ 24 VDC
Mechanical life
30 x 10
6
operations
Electrical life
10
5
operations
(at 5 A, 250 V, cos
= 1)
Operating frequency
< 7200 operations / h
Dielectric strength
Dielectric voltage
2 kVAC (RMS)
Rated impulse withstand
voltage
2.5 kV (1.2/50
s)
Ordering key
Housing
Function
Type
Item number
Output
Power Supply
Range
DBB 51 C M24 10M
2
Specifications are subject to change without notice (27.04.06)
DBB51
Operation Diagram
General Specifications
Power ON delay
200 ms
Power OFF delay
100 ms
Indication for
Power supply ON
LED, green
Output relay ON
LED, yellow (flashing when
timing)
Environment
(EN 60529)
Degree of protection
IP 20
Pollution degree
3 (IEC 60664)
Operating temperature
-20 to 60 C, R.H. < 95%
Storage temperature
-30 to 80 C, R.H. < 95%
Housing dimensions
17.5 x 81 x 67.2 mm
Weight
70 g
Screw terminals
Tightening torque
Max 0.5 Nm according to
IEC EN 60947
CE Marking
Yes
EMC
Electromagnetic Compatibility
Immunity
According to EN 61000-6-2
Emission
According to EN 61000-6-3
Timer Specifications
According to EN 61812-1
When the power supply is
applied the relay operates.
When the power supply is
interrupted the time period
starts and, at the end of the
set time period, the relay
releases.
If power supply is reapplied
before the relay releases the
time is reset and the relay
remains ON.
Note:
DBB51 shoud not be oper-
ated by pulses shorter than
200 ms.
For these puroposes the
relay DMB51, operated by
external contact function,
should be used.
Time setting
Knob adjustable on absolute
scale.
Wiring Diagram
A1
A2
m
15
16
18
L(+)
N(-)
Power supply
Relay ON
Reset time
T
T
T
Mode of Operation/Settings
ON
OFF
Supply Specifications
Power supply
Overvoltage cat. III
Rated operational voltage
(IEC 60664, IEC 60038)
through terminals:
A1, A2
24 VDC 15% and
24 to 240 VAC +10% -15%,
45 to 65 Hz
Voltage interruption
40 ms
Rated operational power
AC supply:
1.5 VA
DC supply:
0.06 W
Dimensions
67.2
18.7
4
5
17.5
8
1
2
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