H
88.02 88.12 Features
Multi-voltage and multi-function timer range
Front panel or socket mount   
 8 and 11 pin plug-in versions available
 Time scales from 0.05s to 100h
 1 delayed contact +1 instantaneous
contact version available (type 88.12)
 Front panel mounting fixing included
 90 series sockets
 Multi-function
 11 pin
 Plug-in for use with 90 series sockets
AI: On-delay
DI: Interval
GI: Pulse delayed
SW: Symmetrical flasher (starting pulse on)
Al a: On-delay (2 timed contacts)
Al b: On-delay (1 timed + 1 instantaneous contact)
Dl a: Interval (2 timed contacts)
Dl b: Interval (1 timed + 1 instantaneous contact)
GI: Pulse delayed
SW: Symmetrical flasher (starting pulse on)
2 CO (DPDT) 2 CO (DPDT)
8/15 8/15
250/400 250/400
2,000 2,000
400 400
0.3 0.3
8/0.3/0.12 8/0.3/0.12
300 (5/5) 300 (5/5)
AgNi AgNi
24230 24230
24...230 24...230
2.5 (230 V)/1 (24 V) 2.5 (230 V)/1.5 (24 V)
20.4264.5 20.4264.5
20.4264.5 20.4264.5
(0.05 s5 h) - (0.05 s10 h) - (0.05 s50 h) - (0.05 s100 h)
 1  1 
300 200
50 
 3  3
10010
3
10010
3
10+55 10+55
IP 40 IP 40
 Multi-function
 8 pin, 2 timed contacts or 
1 timed + 1 instantaneous contact
 Plug-in for use with 90 series sockets
BE: Off-delay with control signal
CE: On- and off-delay with control signal
DE: Interval with control signal on
without control signal
with control signal
without control signal
Contact specification
Contact configuration
Rated current/Maximum peak current A
Rated voltage/Maximum switching voltage V AC
Rated load AC1   VA
Rated load AC15 (230 V AC) VA
Single phase motor rating (230 V AC)  kW
Breaking capacity DC1: 30/110/220 V A
Minimum switching load mW (V/mA)
Standard contact material
Supply specification
Nominal voltage (U
N
) V AC (50/60 Hz)
V DC
Rated power AC/DC VA (50 Hz)/W
Operating range V AC
V DC
Technical data
Specified time range
Repeatability %
Recovery time ms
Minimum control impulse ms
Setting accuracy-full range %
Electrical life at rated load AC1 cycles
Ambient temperature range C
Protection category
Approvals (according to type)
1
P = Pause 
S = Start
R = Reset
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88 Series - Plug-in timers 8 A
88
SERIES
88.92 - 0000 88.92 - 0001 Features
Multi-voltage and mono-function timer range
Front panel or socket mount   
 Asymmetrical flasher The ON and OFF time
are independently adjustable
 8 pin plug-in
 Time scales from 0.05s to 300h
 2 contacts
 Front panel mounting fixing included
 90 series sockets
 Mono-function
 8 pin, 2 timed contacts
 Plug-in for use with 90 series sockets
 Mono-function
 8 pin, 2 timed contacts
 Plug-in for use with 90 series sockets
PI: Asymmetrical flasher (starting pulse OFF) LI: Asymmetrical flasher (starting pulse ON)
2 CO (DPDT) 2 CO (DPDT)
8/15 8/15
250/400 250/400
2,000 2,000
400 400
0.3 0.3
8/0.3/0.12 8/0.3/0.12
300 (5/5) 300 (5/5)
AgNi AgNi
12240 12240
12...240 12...240
2.5 (230 V)/1.5 (24 V) 2.5 (230 V)/1.5 (24 V)
10.8264.5 10.8264.5
10.8264.5 10.8264.5
See Time Scale page 3 See Time Scale page 3
 1  1
200 200 
 1  1
10010
3
10010
3
10+55 10+55
IP 40 IP 40
Contact specification
Contact configuration
Rated current/Maximum peak current A
Rated voltage/Maximum switching voltage V AC
Rated load AC1   VA
Rated load AC15 (230 V AC) VA
Single phase motor rating (230 V AC)  kW
Breaking capacity DC1: 30/110/220 V A
Minimum switching load mW (V/mA)
Standard contact material
Supply specification
Nominal voltage (U
N
) V AC (50/60 Hz)
V DC
Rated power AC/DC VA (50 Hz)/W
Operating range V AC
V DC
Technical data
Specified time range
Repeatability %
Recovery time ms
Minimum control impulse ms
Setting accuracy-full range %
Electrical life at rated load AC1 cycles
Ambient temperature range C
Protection category
Approvals (according to type)
2
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88
SERIE  S
88 Series - Plug-in timers 8 A
without control signal without control signal
H
A Yellow LED: power ON (U)
B Red LED: timing in progress (C)
C Unit of time selected
D Time scale selector
E Function selector
F Function selected
G Time scale selected
H Unit of  time selector
s min h 10h
0.5 0.5 second 0.5 minute 0.5 hour 5 hour
1 1 second  1 minute  1 hour  10 hour
5 5 second  5 minute  5 hour  50 hour
10 10 second  10 minute  10 hour  100 hour 
Time scales
Full scale value for types 88.02, 88.12
Full scale value for type 88.92
Types 88.02, 88.12
Type 88.92
3
EMC specifications
Type of test Reference standard 88.02/88.12 88.92
Electrostatic discharge  contact discharge EN 61000-4-2 4 kV 4 kV
air discharge EN 61000-4-2 8 kV 6 kV
Radio-frequency electromagnetic field (80  1,000 MHz) EN 61000-4-3 10 V/m 10 V/m
Fast transients (burst) (5-50 ns, 5 kHz) on Supply terminals EN 61000-4-4 2 kV 
Surges (1.2/50 s) on Supply terminals  common mode EN 61000-4-5 2 kV 
differential mode EN 61000-4-5 1 kV 
Radio-frequency common mode (0.15  80 MHz) on Supply terminals EN 61000-4-6 3 V 
Technical data
Example: 88 series multi-function timer, 2 CO (DPDT) 8 A contacts, (24230)V AC (50/60 Hz) and (24230)V DC supply.
Ordering information
Special versions
0 = Functions PI (starting pulse OFF) for 88.92
1 = Functions LI (starting pulse ON) for 88.92
2 = Standard 
Supply voltage
230 = (24230)V AC/DC for 88.02, 88.12
240 = (12...240)V AC/DC for 88.92
Codes
88.02.0.230.0002
88.12.0.230.0002
88.92.0.240.0000
88.92.0.240.0001
Series
Type
0 = Functions AI, DI, GI, SW, BE, CE, DE, 11 pin
1 = Functions Al a, Al b, Dl a, Dl b, GI, SW, 8 pin
9 = Functions LI, PI, 8 pin
No. of poles
2 = 2 pole
Supply version
0 = AC (50/60 Hz)/DC 
0 2 0 0 0 2 . . . . 2 3 0 8 8 0
Selection of: function, time scale and units
NOTE: time scales and functions must be set before energising the timer.
88.02 88.12 88.92 - 0000 88.92 - 0001
Function
AI, DI, GI, SW, BE, CE, DE Al a, Al b, Dl a, Dl b, GI, SW PI LI
Time scale 0.5,  1,  5,  10   1.2, 3, 12, 30
Unit of time s (second), min (minute), h (hour), 10h (10 hours) s (second), 10s (second x 10), min (minute),  
10 min (minute x 10), h (hour), 10h (hour x 10)
D
H
LED/visual indication
Types 88.02, 88.12
A Red LED: pulse ON (T1)
B Green LED: pulse OFF (T2)
C Red timing regulator: T1 time setting
D Unit of time selector: T1 (ON)
E Unit of time selector: T2 (OFF)
F Green timing regulator: T2 time setting
G Time scale selected
H Time scale selector
Type 88.92
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88 Series - Plug-in timers 8 A
88
SERIES
1.2
3
12
30
s min
1.2 second
3 second
12 second
30 second
12 second
30 second
120 second
300 second
1.2 minute
3 minute
12 minute
30 minute
12 minute
30 minute
120 minute
300 minute
1.2 hour
3 hour
12 hour
30 hour
12 hour
30 hour
120 hour
300 hour
10s 10min h 10h
A
B
C
D
G
E
F
H
H
H
D-E
4
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0
1
4
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U =Supply 
Voltage   
S =Signal  
switch
P =Pause 
R = Reset
= Output 
Contact 
LED
(red)
LED
(yellow)
Supply 
voltage
NO output
contact 
OFF
ON
ON
ON
Open
Open 
Open (timing
in progress)
Closed
Functions for types 88.02, 88.12
Contact 
(AI) On-delay.
Apply power to timer. Output contacts transfer after preset time
has elapsed. Reset occurs when power is removed.
(BE) Off-delay with control signal.
Power is permenently applied to the timer.
The  output  contacts  transfer  immediately  on  closure  of  the 
Signal  Switch  (S).  Opening  the  Signal  Switch  initiates  the 
preset delay, after which time the output contacts reset.
(DE) Interval with control signal on.
Power is permenently applied to the timer.
On  momentary  or  maintained  closure  of  Signal  Switch  (S),
the  output  contacts  transfer,  and  remain  so  for  the  duration
of the preset delay, after which they reset.
(SW) Symmetrical flasher (starting pulse on).
Apply  power  to  timer.  Output  contacts  transfer  immediately
and  cycle  between  ON  and  OFF  for  as  long  as  power  is 
applied. The ratio is 1:1 (time on = time off).
without control signal
with control signal
Wiring diagram  Type 88.02
x1 - x4
x1 - x4
x1 - x2
x1 - x4
x1 - x2
x1 - x2
x1 - x2
x1 - x4
x1 - x2
x1 - x4
Open Closed
(DI) Interval.
Apply power to timer. Output contacts transfer immediately. 
After the preset time has elapsed, contacts reset.
(GI) Pulse delayed.
Apply  power  to  timer.  Output  contacts  transfer  after  preset
time has elapsed. Reset occurs after a fixed time of 0.5s.
(CE) On- and off-delay with control signal.
Power is permenently applied to the timer.
Closing  the  Signal  Switch  (S)  initiates  the  preset  delay,  after 
which  time  the  output  contacts  transfer.  Opening  the  Signal 
switch  initiates  the  same  preset  delay,  after  which  time  the
output contacts reset.
PAUSE (P)
Closure of the pause switch (2-5) will immediately halt the timing process,
but the elapsed time will be retained, and the current state of the output
contacts will be maintained.
On opening of the pause switch, timing resumes from the retained value.
This is applicable for all functions. 
RESET (R)
A momentary closure of the reset switch (2-7) will reset the timer. Longer
term closure of the reset switch will hold the timer in the reset state. This
is applicable for all functions.
88
SERIE  S
88 Series - Plug-in timers 8 A
H
(Al a) On-delay (2 timed contacts).
Apply power to timer.
Contacts (C
1
and C
2
) transfer after preset time has elasped.
Reset occurs when power is removed.
(Al b) On-delay
(1 timed contact + 1 instantaneous contact).
Apply power to timer. Output contact (C
1
) transfers immediately.
Contact (C
2
) transfers after the preset time has elasped. Reset
occurs when power is removed.
(Dl a) Interval (2 timed contacts).
Apply power to timer.
Output contacts (C
1
and C
2
) transfer immediately. 
After preset time has elasped, the contacts reset.
(Dl b) Interval (1 timed contact + 1 instantaneous contact).
Apply powert to timer. Output contacts (C
1
and C
2
) transfer
immediately.  After  preset  time  has  elasped,  the  contact  (C
2
)
resets. Contact (C
1
) resets when power is removed.
Functions for type 88.12
without control signal
Wiring diagram  Type 88.12
(GI) Pulse delayed.
Apply power to timer. Output contacts transfer after preset time
has elapsed. Reset occurs after a fixed time of 0.5s.
(SW) Symmetrical flasher (starting pulse on).
Apply  power  to  timer.  Output  contacts  transfer  immediately
and cycle between ON and OFF for as long as power is applied.
The ratio is 1:1 (time on = time off).
5
(LI) Asymmetrical flasher (starting pulse ON).
Apply power to timer. Output contacts transfer immediately
and cycle between ON and OFF for as long as power is
applied. The ON and OFF times are independently 
adjustable.
without control signal
Wiring diagram  Type 88.92
V
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2
0
1
4
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(PI) Asymmetrical flasher (starting pulse OFF).
Apply power to timer. Output contacts transfer after time T2
has elapsed and cycle between OFF and ON for as long as
power is applied. The ON and OFF times are independently
adjustable.
88 Series - Plug-in timers 8 A
88
SERIES
H
U = Supply 
Voltage  
LED OFF
(green)
LED ON
(red)
Supply 
voltage
OFF
ON
ON
Functions for type 88.92
Contact 
11 - 14
21 - 24
11 - 12
21 - 22
11 - 14
21 - 24
11 - 12
21 - 22
11 - 14
21 - 24
11 - 12
21 - 22
Open Closed
6
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90.26
90.21
Approvals 
(according to type):
Screw terminal (Box clamp) socket 90.20  90.20.0  90.21  90.21.0 
panel or 35 mm rail (EN 60715) mount Blue Black Blue Black
For timer type 88.12, 88.92 88.02
Technical data
Rated values 10 A - 250 V 
Dielectric strength 2 kV AC
Protection category IP 20 
Ambient temperature C 40+70
Screw torque Nm 0.5
Wire strip length mm 10
Max. wire size for 90.20 and 90.21 sockets solid wire  stranded wire
mm
2
1x6 / 2x2.5 1x6 / 2x2.5
AWG 1x10 / 2x14 1x10 / 2x14
Approvals 
(according to type):
Screw terminal (Plate clamp) socket 90.26 90.26.0 90.27 90.27.0
panel or 35 mm rail (EN 60715) mount Blue Black Blue Black
For timer type 88.12, 88.92 88.02
Technical data
Rated values 10 A - 250 V 
Dielectric strength 2 kV AC
Protection category IP 20 
Ambient temperature C 40+70
Screw torque Nm 0.8
Wire strip length mm 10
Max. wire size for 90.26 and 90.27 sockets solid wire  stranded wire
mm
2
1x4 / 2x2.5 1x4 / 2x2.5
AWG 1x12 / 2x14 1x12 / 2x14
Approvals 
(according to type):
Sockets 8-11 pin backwired with solder terminals 90.12.4 (black) 90.13.4 (black)
For timer type 88.12, 88.92 88.02
Technical data
Rated values 10 A - 250 V 
Dielectric strength 2 kV AC
Ambient temperature C 40+70
90.13.4
90.20 90.21
90.27 90.26
88
SERIE  S
90 Series - Sockets and Accessories for 88 series Timers
H