MIL-PRF-83536/2B
Rupture current: 25 amperes dc, 40 amperes ac.
Time current relay characteristics: See table II.
TABLE II. Time current relay characteristics. 1/
Successive application
Amperes
Time
1
10
1 hour
2
15
20 seconds
3
37.5
2 seconds
4
75
.53 second
1/ All relays shall withstand overload and fault currents. Relays must be able
to sustain five applications (make and carry only) of power concurrently on
adjacent poles at each of four different current levels in the sequence listed in
table II. Separate relays shall be tested at 28 V dc and 115/200 V ac, 400 Hz
3-phase. Cooling time between successive applications shall be 30 minutes.
Tests shall be performed on both normally open and normally closed contacts.
There shall be no failures or evidence of welding or sticking and relays shall
pass contact voltage drop at the conclusion.
Coil requirements 1/: See table III.
Operate time: 5 milliseconds maximum at rated coil voltage at 25°C. 6 milliseconds maximum at rated coil
voltage over the temperature range.
Release time: 5 milliseconds maximum from rated coil voltage at 25°C. 6 milliseconds maximum from rated coil
voltage over the temperature range.
Duty rating: Continuous.
Coil transient suppression: Applicable (42 V dc maximum).
Neutral screen: Not applicable.
1/ CAUTION: Due to possible interaction of relay magnetic fields, the following spacing requirements, as a
minimum, shall be considered in dense packaging situations:
a. Row to row assisting fields: .125 (3.18 mm).
b. Row to row opposing fields: .1875 (4.763 mm).
c. Side to side alternating fields: .0625 (1.588 mm).
d. Side to side like fields: .125 (3.18 mm).
9