Hitachi 152SO, Installation & Operation Manual, Page: 11 / 36

PN-152SO Switch Overload Relay
Copyright 2019 SM 5929 Rev. 23, March 2019 2-3
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.
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.
Table 2-1. Crimping Tools
Crimping
Tool
Wire Size
Old-style Receptacle
Contact Spring
Improved Base Receptacle
Contact Spring
J397138 #10/#12 AWG J680181 M451142-2703
J397139 #14/#16 AWG J680165 (Standard) M451142-2702
J397188 #18/#20 AWG J680179 M451142-2701
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.
RECEPTACLE
SPRING
CONTACT
RECEPTACLE
SPRING
CONTACT
LOCK SIDE LOCK SIDE
OLD MOUNTING BASE IMPROVED MOUNTING BASE
4C
5.
00
03
.0
0