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1. Receptacle contact springs must be inserted into the base with the lock side
down or lanced tab up (refer to Figure 2-2).
2. Make certain that the lanced tab is slightly compressed as the receptacle contact
spring is inserted along the top of the cavity. The lanced tab could have been
bent during handling and, therefore, would not provide the required contact
pressure after the relay is inserted. If the lanced tab does not touch, pull it up
slightly using fingers or a suitable tool.
3. After insertion, pull firmly on the wire to make certain the receptacle contact
spring is locked in the cavity.
OLD MOUNTING BASE
Figure 2-2. Receptacle Contact Springs Installed
2.4.3. Installing Wires in Receptacle Contact Springs
Use the following procedure to ensure a good electrical and mechanical connection
between the conductor wire and the receptacle contact spring. Table 2-1 identifies the
correct crimping tool to be used when installing wires in receptacle contact spring.
Crimping
Wire Size
Tool
J397138
#10/#12 AWG
J397139
#14/#16 AWG
J397188
#18/#20 AWG
1. Strip 3/16 in. (0.187 in. or 0.47 cm.) of insulation from the end of the wire.
2. Place the receptacle contact spring into the jaws of the proper crimping tool.
When using only one terminal of any wire size, use the shortest terminal.
Copyright 2019
RECEPTACLE
CONTACT
SPRING
LOCK SIDE
IMPROVED MOUNTING BASE
Table 2-1. Crimping Tools
Old-style Receptacle
Contact Spring
J680181
J680165 (Standard)
J680179
SM 5929 Rev. 23, March 2019
PN-152SO Switch Overload Relay
RECEPTACLE
CONTACT
SPRING
LOCK SIDE
Improved Base Receptacle
Contact Spring
M451142-2703
M451142-2702
M451142-2701
2-3
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