www.sensata.com

Page 11

Copyright © 2020 Sensata Technologies, Inc.

OPERATING CHARACTERISTICS

Inrush Pulse Tolerance

The following table provides a comparison of inrush pulse tolerance with

and without the inertial delay feature for each of the 50/60Hz delays.

Pulse tolerance is defined as a single pulse of half sine wave peak current

amplitude of 8 milliseconds duration that will not trip the circuit breaker.

The table at left provides a guide to determine if the inertia delay feature

is required. Consult factory for further assistance.

Typical Resistance / Impedance

Current Ratings

(Amps)

Impedance

DC (ohms)

AC, 50/60Hz (ohms)

AC, 400Hz (ohms)

51, 52, 53, 59

61, 62, 63, 69

41, 42, 43, 49

0.200

45.8

28.5

71.94

1.00

1.38

1.10

2.85

2.00

0.371

0.29

0.76

5.00

0.055

0.051

0.12

10.0

0.017

0.016

0.032

20.0

0.006

0.006

0.010

30.0

0.003

0.004

0.006

50.0

0.0019

0.0018

—

DCR and Impedance based on 100% rated current applied and stabilized for a minimum of one hour. Tolerance .05-2.5 amperes ± 20%: 2.6 -20 amperes ± 25%,

21-50 amperes ± 50%. Consult factory for special values and for coil impedance of delays not shown.

Inrush Pulse Tolerance

Delay

Pulse Tolerance

61, 62, 63, 71, 72, 73

10 times rated current (approx)

61F, 62F, 63F, 71F, 72F, 73F

12 times rated current (approx)

64, 65, 66

25 times rated current (approx)