SPECIFICATIONS
Standard Current Ratings 2.5, 3, 4, 5, 6, 7, 8, 10, 12, 15, 16, 20 Amps (AC - inductive, DC - resistive)
Voltage Ratings 125 / 250 VAC, 50/60 Hz, 50 VDC
Max Breaking Capacity 8x In for < 6A, 60A max. > 6A
Conditional Short Circuit Capacity
Inc1 (PC1) per EN 60934
1000A 125 / 250VAC, 50VDC,SC:1kA, C1, 125 / 250VAC, 50VDC
Ref. CSA 22.2 No. 235-04, UL 1077
Rated Short Circuit Capacity Icn
Ref. EN 60934
Min. 6 X Rated Current (6 X In), 250VAC inductive
Min. 4 X Rated Current (4 X In), 50VDC resistive
Tripping Current Code (TC) TC2 ref: CSA22.2, No. 235-04
Insulation Resistance Min 100 MΩ @ 500VDC
Dielectric Strength 1.5 KV for 1 min. (per EN60934)
Initial Withstand Voltage 2.5 KV (per EN60934)
Operational Life 1000 Cycles @ 2 x In
Overload Rating OL0 240Vac, 50Vdc, ref: CSA22.2, No. 235-04
Overload Switching Capacity 6x In AC Up to 9A, 4x In DC Up to 12A
60A Max. from 10A to 12A
Max Operating Temperature 60°C (140°F) Ambient
Application Type General Industrial ref: CSA22.2, No. 235-04
Method of Tripping Thermal “TO”, trip-free
Type of Actuation Reset button, type “R”
Weight Approximately 17 grams
Applicable Approvals UL 1077, CSA 22.2 No. 235-04, TÜV EN 60934
FEATURES
• Protectionrangeandoperatingvoltage:
0.1 to 16.0 Amps, 240 VAC, 50 VDC (cЯUus,cCSAus)
0.5 to 12 Amps, 240 VAC, 24 VDC (VDE)
• RoHScompliant,singlepole,thermalcurrentoverloadprotector
• Reliable,trip-freeoperationoncurrentoverloads
•Warranty:24-monthsfromdateofmanufacture
DESCRIPTION
The Airpax™ ATR20 product family is a single pole, thermally operated overload protector with a snap-acting trip mechanism that
provides reliable, trip-free operation on current overloads. The ATR20 series is designed with multiple mounting configurations
including central nut and wing clip.
ATR20 Series
Thermal Circuit Protector for Equipment
http://airpax.sensata.com/
ATR20 Series
306
ADDITIONAL PRODUCTS
http://airpax.sensata.com/ ATR20 Series 307
Trip Time (sec)
CURRENT (%)
0.1
1
10
100
1000
0 100
135
200 300 400 500 600 700 800 900 1000
Example :
Normal Continuous Current = 5.0 A
Ambient Temperature = 40°C
Multiplication Factor = 1.1 (from 3rd chart)
Recommended Rating: 5.0 x 1.1 = 5.5
Select the Nearest Rating = 6.0 amps (nearest)
TIME / CURRENT CHARACTERISTICS
The standard characteristic is valid for an ambient temperature of 25°C. However, if the device is to be used in an ambient temperature
other than 25°C, an allowance must be made when selecting the current rating.
See the charts, graph and example below to help determine the right circuit protector rating for your application.
AMBIENT TEMPERATURE CORRECTION FACTOR - 2.5 AMP CIRCUIT PROTECTOR
Ambient Temperature (°C) - 20 - 10 0 + 10 + 25 + 30
Multiplication Factor 0.58 0.6 0.7 0.8 1 1
Operating Characteristics :
AMBIENT TEMPERATURE CORRECTION FACTOR - 3 AMP TO 4 AMP CIRCUIT PROTECTOR
Ambient Temperature (°C) - 20 - 10 0 + 10 + 25 + 30 + 35
Multiplication Factor 0.8 0.85 0.9 0.9 1 1 1.1
AMBIENT TEMPERATURE CORRECTION FACTOR - 5 AMP TO 20 AMP CIRCUIT PROTECTOR
Ambient Temperature (°C) - 20 - 10 0 + 10 + 25 + 40 + 50 + 60
Multiplication Factor 0.8 0.85 0.88 0.9 1 1.1 1.3 1.4
http://airpax.sensata.com/
ATR20 Series
308
MOUNTING OPTIONS, inches [mm]
3/8" - 27UNS
Pitch
ØM11X1
Panel cutout
C. M 11 Thread
Ø
Ø
Panel cutout
A. 3/8"- 27 UNS Thread
Ø
LOADLINE
ATR20
LOADLINE
ATR20
250V~ 50V-
15A
250V~ 50V-
15A
Panel cutout
.236
6.0
.118
3
.374
9.5
.472
12
.378
9.6 -.004
-0.1
( )
.350
8.9
.295
7.5 .118
3
.472
12
.374
9.5
.906
23
.461
11.7
.689
17.5
.248 x .031
6.3 x 0.8
1.161
29.5
.031
0.8
+.008
+0.2
( )
.441
11.2
Ø
.394
10
.031
0.8
+.004
+0.1
( )
.626
15.9
Ø
.547
13.9
.248 x .031
6.3 x 0.8
.689
17.5
.461
11.7
.906
23
.472
12
.118
3 .295
7.5
.390
9.9
.571
14.5
.571
14.5
.618
15.7
.433
11
.976
24.8
.531
13.5
.610
15.5 1.161
29.5
Pitch
Tripped condition
Non-tripped condition
Tripped condition
Non-tripped
condition
Tripped condition
Non-tripped
condition -.004
-0.1
( )
+.008
+0.2
( )
+.004
+0.1
( )
Central Mounting (A)
Wing Clips (W)
Central Mounting (C)
2 Mounting Bushing
A Plastic 3/8”-27
C Plastic M11
W Wing Clip
7 Mounting Nut
N None or Wing Clip
A Plastic Knurled
B Metal Knurled
C Metal Hex Nut
D Sealing Knurled Boot
9 Indicator Plate
0 None
1 Embossed Aluminium
2 Silver Letters on Black
4 Terminal Options
S Straight
L 90° Bend, Left Side
R 90° Bend, Right Side
5 Button Color
B Black
WB White with
trip indication
8 Std.Current Rating
2.5, 3.0, 4.0, 5.0, 6.0,
7.0, 8.0, 10.0, 12.0,
15.0, 16.0, 20.0
6 Button Marking
0 None
1 White, Vertical
2 Black, Vertical
3 White, Horizontal
4 Black, Horizontal
ATR20 - C - 63 S - B 1 - A - 7.0A - 2
Product Type
3 Terminal Size
63 .250
ADDITIONAL PRODUCTS
http://airpax.sensata.com/ ATR20 Series 309
250V~ 50V-
15A
RIGHT SIDE
LEFT SIDE
L. 90° BEND,
S. STRAIGHT R. 90° BEND,
LOADLINE
ATR20
LOADLINE LOADLINE
.343
8.7
.102
2.6
.157
4
.031
0.8 .248
6.3 .689
17.5
.343
8.7
.102
2.6
.157
4
.031
0.8
.248
6.3 .689
17.5
.031
0.8
.248 x .031
6.3 x 0.8
.689
17.5
.461
11.7
KNURLED NUT
(P/N 053-200-0001)
KNURLED NUT
(P/N 053-200-0002)
PLASTIC METAL METAL
HEXAGONAL NUT
(P/N 053-200-0003)
15
15
HORIZONTAL
VERTICAL DUST COVER METAL
KNURLED NUT
(053-200-0005)
TYPES:
1. Embossed (Aluminium)
(P/N 053-200-0004)
2. Silver Letters on Black
(P/N 053-200-0007)
Panel
Cutout
Positions
Panel
Cutout
Positions
ADDITIONAL OPTIONS
Terminals
Button Marking Accesories
DECISION TABLES
Mounting Nuts
Indicator Plate
