Datasheet
D4 MINIATURE SWITCH
CONTINUED
 • Not every configurable variant is available for order. Please contact us.
• The final two digits of article numbers on commercial documents refer to the 
 index of the respective drawing.
• Customer-specific models are marked with a G or W as the sixth digit of the 
 article number.
Electrical rating and operating life ❷
Electrical rating 
according to***
Electrical life for 40T85* 
(operations)
Mechanical lifetime 
actuator material 
Operating force  Housing mark Code
EN/UL 61058-1 acc. to EN/UL POM PET max. (cN)
Standard operating force 
0.1 (0.05) A, 250V AC 50,000 10 x 10
6
1 x 10
6
170 D4 1 Y 1
3 (1) A, 250V AC 50,000 10 x 10
6
1 x 10
6
170 D4 2 Y 2
6 (2) A, 250V AC 50,000 5 x 10
6
25 x 10
4
170 D4 3 Y 3
10 (3) A, 250V AC 50,000 1 x 10
6
1 x 10
5
285 D4 4 Y 4
16 (4) A, 250V AC 50,000 2 x 10
5
1 x 10
5
400 D4 5 Y 5
Light operating force
0.1 (0.05) A, 250V AC 50,000 10 x 10
6
1 x 10
6
45** D4 1 X 1
3 (1) A, 250V AC 50,000 10 x 10
6
1 x 10
6
45** D4 2 X 2
6 (2) A, 250V AC 50,000 10 x 10
6
5 x 10
5
45 D4 3 X 3
10 (3) A, 250V AC 50,000 10 x 10
6
25 x 10
4
75 D4 4 X 4
16 (4) A, 250V AC 50,000 10 x 10
6
25 x 10
4
100 D4 5 X 5
21 (8) A, 250V AC 10,000 3 x 10
6
25 x 10
4
150 D4 8 X 8
* Operating life 40T125 and 40T150 on request 
** Lower operating forces on request
*** Additional electrical ratings according to UL 1054 on request
Switching parameters
Model Type Max. operating force (cN)
Standard Light
Max. 
pre travel 
(mm)
Min. 
overtravel 
(mm)
Differential 
travel 
max.(mm)
Max. rest 
position 
(mm)
Operating 
point 
(mm)
Code
Without 
auxiliary 
actuator 
D41 
D42 
D43 
D44 
D45 
D48
170 
170 
170 
285 
400 
–
45 
45 
45 
75 
100 
150
1.2 
1.2 
1.2 
1.2 
1.2 
1.6
1.3 
1.3 
1.3 
1.3 
1.3 
1.2
0.3 
0.3 
0.3 
0.3 
0.3 
0.3
16.2 
16.2 
16.2 
16.2 
16.2 
16.2
14.7 
 0.5 
14.7 
 0.5 
14.7 
 0.5 
14.7 
 0.5 
14.7 
 0.5 
14.7 
 0.5
AA
Terminal type ❹
Terminal type Code
Q.C. terminal 6.3 x 0.8mm, straight V1
Q.C. terminal 6.3 x 0.8mm, dog leg V3
Q.C. terminal 6.3 x 0.8mm, RAST 5 Y5
Q.C. terminal RAST 2.5 X5
Q.C. terminal 4.8 x 0.8mm, straight* Q1
Q.C. terminal 4.8 x 0.8mm, dog leg* Q3
Q.C. terminal 4.8 x 0.5mm, straight** R1
Solder terminal short* B8
Solder terminal with temperature-stop S1
Welding terminal A1
PCB terminal 1.3 x 0.8mm, housing side* PA
PCB terminal 1.3 x 0.8mm, cover side* PB
PCB terminal 1.3 x 0.5mm, underside* P4
* Not for D48 
** D45 and D48 not with VDE approval, only UL1054
Auxiliary actuator ❺
Type Mounting 
point
Length Code Code
Without auxil-
iary actuator 
AA
Material Nickel- 
plated steel
Optional 
stainless 
steel 
Straight RM rear
FM front
21.2 
35.6 
69.9 
25.7 
40.1 
74.4
LA
LD 
LL 
MA 
MD 
ML
JA 
JD 
JL 
KA 
KD 
KL
Roller RM rear
FM front
20.6 
34.1 
25.1 
38.6
RA 
RD 
TA 
TD
Simulated 
 roller
RM rear
FM front
20.6 
25.1
SA 
UA
Generation of order code (example)
The order code consists of 5 parameters:
❶❷❸❹❺
Series Electrical rating Circuitry Terminal type Auxiliary actuator
D4
= Miniature 
switch
5 
= 16 (4) A, 
250V AC
9 
= S.P.D.T.
V3 
= Q.C.terminal, 
dog leg, 
6.3 x 0.8mm
AA 
= without 
 auxiliary actuator 
Length of auxiliary actuator
Straight
Roller
Simulated roller
Rear mounting point (RM)
9
10.55
Front mounting point (FM)
13.5
Auxiliary actuator
For detailed information please note the technical specifications which you can find in the download section of our website www.switches-sensors.zf.com.


