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D4 Series
Miniature Snap-Action Switches
Features
  • Features
  • 8 current ratings
  • Choice of actuators
  • Various terminal types
  • 3 contact arrangements
  • Choice of standard or light operating force
  • Long-life coil spring mechanism
  • Agency approved extended life versions
  • ENEC/VDE approval standard on European versions
  • Stackable case and cover available upon request
D4 Series
D4 Series

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D4 Series Cutaway

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  Electrical Ratings
Switch
Series
EN61058
Rating
UL1054
Rating
Electrical Life at Rated Load
According to EN
(Min. Operations)
According to UL
(Min. Operations)
D40
N/A
1.0A, 125VAC
N/A
6,000*
D41
0.1(0.05)A, 250V~
0.1A, 125/250VAC
50,000
6,000*
D42
3(1)A, 250V~
3A, 125/250VAC, 1/10HP, 250VAC
50,000
6,000*
D43
6(2)A, 250V~
5A, 1/4HP, 125/250VAC
50,000
6,000*
D44
10(3)A, 250V~
10A, 1/2HP, 125/250VAC
50,000
6,000*
D45
16(4)A, 250V~
10(3)A, 400V~ (Std. force only)
15A, 1/2HP, 125/250VAC
50,000
6,000*
D48
21(8)A, 250V~
21A, 1HP, 125VAC, 2HP, 250VAC
10,000
6,000
D49
N/A
10A, 1/2HP, 125/250VAC; 6A, 30VDC
N/A 
6,000* 
Operating life for 125°C and 150°C available upon request.
*Indicates 100K life available. Consult factory.
  Specifications
Electrical
Temperature Rating: -40° to +85°C, 125°C or 150°C
Flammability Rating: UL94V-O
Materials
Case: Thermoplastic Polyester (PBT), European Versions (PET)
Actuating Button: Thermoplastic Acetal (POM) 85°C
Thermoplastic Polyester (PET) 125°C, 150°C
Auxiliary Actuator: Aluminum, Stainless Steel or Cold-Rolled Steel (Nickel-Plated)
Common Terminal: Silver-Plated Brass
NO/NC Terminals: Brass (D40, D41, D42, D43, D44, D49 and D45–European versions)
Copper (D45–US Versions and D48–European versions)
Silver-Plated Copper (D48–US versions)
Moving Blade: Brass (D40, D41, D42, D43)
Beryllium Copper (D44, D45, D48)
Contacts: Gold Crosspoint (D40, D41)
Silver Alloy (D42, D43, D44, D45, D48, D49)
  Approvals

European Approved Versions

Standard D4 series switches with metric mounting holes
automatically carry ENEC approval. D4 series switches
with U.S. mounting holes have optional VDE approval.
Contact factory for part number. Switches with straight
terminals may require insulated connectors for
international approval.

UL - U.S. and CanadaENECGermany - DVE
  Dimensions
D4  U.S. Dimensions

Inches (mm)

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D4 European Dimensions

Inches (mm)

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  Terminals

Inches (mm)
Note: Tolerance on terminals ±0.003" (0.08mm)

  Terminal Types
B8 Terminal
C1 Terminal C3 Terminal P4 Terminal P5 Terminal PA Terminal
PB Terminal Q1 Terminal Q3 Terminal R1 Terminal R3 Terminal S1 Terminal
V1 Terminal V3 Terminal W9 Terminal Y5 Terminal Z5 Terminal Plug Housing
*Connector Part #623-0518 (mates with Y5 only). 
  Drilling Patterns for PCB Terminals
PCB Drilling Pattern - PA Terminal PCB Drilling Pattern - P4 Terminal
PCB Drilling Pattern - PB Terminal PCB Drilling Pattern - P5 Terminal

Click image for larger view.
 

  Mounting

Mounting — U.S. Version
Recommended mounting screw size: #4-40 Round head.
Recommended torque on screw: 3 inch- lbs. max.

Mounting — European Version
Recommended mounting screw size: M3.
Recommended torque on screw: 70N cm max.
  Actuators

Many special forms and lengths of actuators are available. Standard type integral hinged lever and roller actuators are available in choice of 2 mounting positions. Actuation lengths are dimensioned from centerline of switch mounting hole as shown.

Note: Actuator tolerance ±0.003 inch (±0.08mm)

Click image for larger view.


Auxiliary Actuators

Inches (mm)

  Actuator Specifications — U.S. Versions
Actuator
Type
Switch
Type
Maximum Operating Force
(grams)
Max.
Pre-Travel

inches
(mm)
Operating
Point

inches
(mm)
Min.
Over-Travel

inches
(mm)
Max.
Movement Differential

inches
(mm)
Actuation
Length

inches
(mm)
D40, D41, D42
(Stand./Light)
D43
(Std./Lt.)
D44
(Std./Lt.)
D45
(Std./Lt.)
D48
(Light)
D49
(Std./Lt.)
D40 - 45,
D49
D48
D40 - 45,
D49
D48
D40 - 45,
D49
D48
D40 - 45,
D49
D48
AA
AA Actuator
75 / 15
170 / 45
285 / 75
400 / 100
120
285 / 75
0.047
(1.19)
0.070
(1.78)
0.558/0.598
(14.17/15.19)
0.537/0.577
(13.64/14.66)
0.050
(1.27)
0.035
(1.02)
0.010
(0.25)
0.010
(0.25)
N/A
LA
LA Actuator
75 / 15
170 / 45
285 / 75
400 / 100
183
285 / 75
0.062
(1.57)
0.063
(1.60)
0.580/0.620
(14.73/15.75)
0.578/0.618
(14.70/15.70)
0.050
(1.27)
0.031
(0.80)
0.016
(0.41)
0.011
(0.30)
0.865
(21.97)
LD*1
LD Actuator
35 / 8
86 / 23
144 / 37
200 / 51
77
144 / 37
0.125
(3.18)
0.150
(3.80)
0.555/0.645
(14.10/16.38)
0.563/0.657
(14.0/16.4)
0.085
(2.16)
0.071
(1.80)
0.030
(0.76)
0.031
(0.80)
1.40
(35.56)
JL*2
JL Actuator
17 / 3.5
38 / 10
63 / 17
90 / 22
36
63 / 17
0.300
(7.62)
0.347
(8.80)
0.500/0.700
(12.70/17.78)
0.472/0.724
(12.0/18.4)
0.187
(4.75)
0.169
(4.30)
0.065
(1.65)
0.067
(1.70)
2.757
(70.03)
MD*3
MD Actuator
20 / 5
51/ 14
86 / 23
120 / 30
46
86 / 30
0.222
(5.59)
0.252
(6.40)
0.525/0.675
(13.34/17.15)
0.535/0.661
(13.6/16.8)
0.130
(3.30)
0.126
(3.20)
0.050
(1.27)
0.051
(1.30)
1.580
(40.13)
RA
RA Actuator
75 / 15
170 / 45
285 / 75
400 / 100
N/A
285 / 75
0.047
(1.19)
N/A
0.776/0.836
(19.71/21.33)
N/A
0.040
(1.02)
N/A
0.010
(0.25)
N/A
0.810
(20.57)
RD
RD Actuator
35 / 8
86 / 22
144 / 37
200 / 50
N/A
144 / 37
0.125
(3.18)
N/A
0.761/0.851
(19.33/21.62)
N/A
0.085
(2.16)
N/A
0.030
(0.76)
N/A
1.240
(34.04)
TD
TD Actuator
25 / 5
51 / 14
86 / 22
120 / 30
N/A
86 / 22
0.200
(5.08)
N/A
0.731/0.881
(18.57/22.38)
N/A
0.120
(3.05)
N/A
0.040
(1.02)
N/A
1.512
(38.51)
GD
GD Actuator
35 / 8
86 / 33
144 / 47
200 / 50
N/A
144 / 37
0.125
(3.18)
N/A
1.000/1.090
(25.40/27.69)
N/A
0.085
(2.16)
N/A
0.030
(0.76)
N/A
1.340
(34.04)

*Note: On Light Force D40, D41 and D42, auxiliary actuators are made out of Aluminum.
1YD suffix for D40, D41 and D42.
2YL suffix for D40, D41 and D42.
3XD suffix for D40, D41 and D42.

  Actuator Specifications — European Versions
Actuator
Type
Switch
Type
Maximum Operating Force
(grams)
Max.
Pre-Travel

inches
(mm)
Operating
Point

inches
(mm)
Min.
Over-Travel

inches
(mm)
Max.
Movement Differential

inches
(mm)
Actuation
Length

inches
(mm)
D41, D42, D43
(Stand./Light)
D44
(Std./Lt.)
D45
(Std./Lt.)
D48
(Light)
D41 - 45
D48
D41 - 45, D48
D41 - 45
D48
D41 - 45
D48
AA
AA Actuator
170 / 45
285 / 75
400 / 100
150
0.047
(1.2)
0.063
(1.6)
0.559 / 0.599
(14.2 / 15.2)
0.051
(1.3)
0.047
(1.2)
0.012
(0.3)
0.012
(0.3)
JA/LA
JA/LA Actuator
190 / 50
320 / 85
440 / 115
180
0.047
(1.2)
0.063
(1.6)
0.579 / 0.618
(14.7 / 15.7)
0.035
(0.9)
0.031
(0.8)
0.012
(0.3)
0.012
(0.3)
0.835
(21.2)
JD/LD*
JD/LD Actuator
86 / 22
144 / 40
200 / 50
75
0.126
(3.2)
0.150
(3.8)
0.551 / 0.646
(14.0 / 16.4)
0.091
(2.3)
0.071
(1.8)
0.031
(0.8)
0.031
(0.8)
1.40
(35.6)
JL/LL*
JL/LL Actuator
40 / 10
60 / 17
90 / 22
35
0.299
(7.6)
0.346
(8.8)
0.472 / 0.724
(12.0 / 18.4)
0.185
(4.7)
0.169
(4.3)
0.067
(1.7)
0.067
(1.7)
2.75
(69.9)
KA/MA
KA/MA Actuator
110 / 28
180 / 50
256 / 65
100
0.087
(2.2)
0.118
(3.0)
0.567 / 0.630
(14.4 / 16.0)
0.063
(1.6)
0.055
(1.4)
0.024
(0.6)
0.024
(0.6)
1.01
(25.7)
KD/MD*
KD/MD Actuator
50 / 14
86 / 25
120 / 30
45
0.200
(5.1)
0.252
(6.4)
0.535 / 0.661
(13.6 / 16.8)
0.142
(3.6)
0.126
(3.2)
0.051
(1.3)
0.051
(1.3)
1.58
(40.1)
KL/ML*
KL/ML Actuator
25 / 6
40 / 10
56 / 13
20
0.500
(12.7)
0.575
(14.6)
0.433 / 0.764
(11.0 / 19.4)
0.311
(7.9)
0.283
(7.2)
0.098
(2.5)
0.098
(2.5)
2.93
(74.4)
RA
RA Actuator
190 / 45
330 / 75
440 / 100
180
0.047
(1.2)
0.067
(1.7)
0.776 / 0.839
(19.7 / 21.3)
0.039
(1.0)
0.031
(0.8)
0.016
(0.4)
0.012
(0.3)
0.811
(20.6)
RD
RD Actuator
86 / 22
144 / 40
200 / 50
75
0.126
(3.2)
0.150
(3.8)
0.764 / 0.850
(19.4 / 21.6)
0.087
(2.2)
0.071
(1.8)
0.031
(0.8)
0.031
(0.8)
1.34
(34.1)

TA

TA Actuator
110 / 30
200 / 55
260 / 70
110
0.087
(2.2)
0.118
(3.0)
0.764 / 0.850
(19.4 / 21.6)
0.063
(1.6)
0.051
(1.3)
0.024
(0.6)
0.024
(0.6)
0.988
(25.1)
TD
TD Actuator
55 / 14
86 / 22
120 / 30
50
0.200
(5.1)
0.244
(6.2)
0.744 / 0.870
(18.9 / 22.1)
0.142
(3.6)
0.118
(3.0)
0.051
(1.3)
0.047
(1.2)
1.52
(38.6)
SA
SA Actuator
190 / 50
330 / 85
440 / 115
200
0.051
(1.3)
0.067
(1.7)
0.780 / 0.835
(19.8 / 21.2)
0.039
(1.0)
0.031
(0.8)
0.012
(0.3)
0.012
(0.3)
0.811
(20.6)
UA
UA Actuator
120 / 32
215 / 55
280 / 70
110
0.087
(2.2)
0.118
(3.0)
0.768 / 0.846
(19.5 / 21.5)
0.063
(1.6)
0.051
(1.3)
0.020
(0.5)
0.020
(0.5)
0.988
(25.1)
*Note: On Light Force D41 and D42 (MD, ML, LD, LL), auxiliary actuators are made out of Aluminum.
  PART NUMBERS COMMONLY STOCKED IN DISTRIBUTION
Click on the Part Number to open 'Check Distributor Stock' window.
D41CR1AA
D41CR1LA
D41CR1LD
D41CR1RA
D41LR1AA
D41LR1XL
D42LR1AA
D42LR1XL
D43CR1AA
D44CR1AA
D44CR1LD
D44CR1RA
D44CR1RD
D44LR1AA
D44LR1LD
D44LR1LL
D44LR1MD
D44LR1ML
D44LR1RA
D44LR1RD
D45CR1AA
D45LR1AA
D45LR1LL
D45LR1ML
These part numbers offer advantages in lower minimum order quantity and typically shorter lead times.
  Ordering Information — U.S. Versions

VDE Identifiers
Switches with a “standard” operating force are identified by a ‘Y’ next to the standard model description, e.g. D43Y.
Switches with a “light” operating force are identified by a ‘X’ next to the standard model description, e.g. D43X.

U.S. Ordering Info Chart

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  Ordering Information — European Versions

VDE Identifiers
Switches with a “standard” operating force are identified by a ‘Y’ next to the standard model description, e.g. D43Y.
Switches with a “light” operating force are identified by a ‘X’ next to the standard model description, e.g. D43X.

European Ordering Info Chart

Click for Larger View.

 

Specifications subject to change without notice.