EXT 200 SERIES
Miniature Circut Breakers
Description
The EXT 200 Series of mini remote reset circuit breakers are commonly designed for 12 Volt DC wiring harness protection. The device is ideal for theprotection of circuits that may experience momentary overloads and is often chosen as an alternative to fuses, where nuisance replacement can be
an inconvenience. The EXT 200 can be mounted in the fuse block or elsewhere within the wiring harness. This bimetallic device is sensitive to both
overcurrent and over-temperature fault conditions.

Features••••

SAE Type 2 (non-cycling) device
Multiple bimetallic resistivities available
Multiple terminal configurations available
Metal encased

SPECIFICATIONS
Nominal Operating Voltage

12 Volts DC

Typicale Voltage Dropat Operating Current

200 mV max

Current Rating
Typical Ambient
Temperature Range

5 to 35 amps @ 25ºC
(in 5 amp increments)-40ºC to 85ºC

Page 1

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Curves
These curves are to be used only as a guide in selecting a protector for a particular application. Factors such as distance from the heat source andthe method of mounting should be considered in selecting a protector. Final trip times are dependent upon terminal configuration and mounting in theapplication.

1000
800
600
400

Trip Time in Seconds

200

Typical
EXT 200
Trip Time Curveat 25ºC

100
80
60
40
20
1086420Rated
200% Rated
Current
Current
135% Rated
Current

TestCurrent

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DIMENSIONS
Dimensions in mm [Inch]
EXT 221

EXT 229

EXT 234

EXT 232

7.3 (.29)

17.8 (.70)

11.0 (.43)

6.6 (.26)
5.2 (.20)

25.1 (.99)
9.9 (.39)

19.7 (.78)

12.3 (.48)

4.45 (.175)
5.4 (.21)

3.8 (.15)

4.2 (.17)

4.0 (.16)

5.2 (.20)

2.8 (.11)
10.9 (.43)

2.25 (.88)

7.8 (.31)

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Revised 01/25/18

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CONTACT US
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electrical-protection-sales@sensata.com
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