Honeywell Sensing and Control
3
Enclosed Basic Series Limit Switches
ISSUE 5
88173
WIRING
• Honeywell’s Enclosed Basic Switches have internal terminals
that allow for easy wiring and integration.
• If a side mounting switch is being wired it is possible for the
switch to be mounted in place before wiring takes place. If
a flange mounting switch is being used it is likely that that
the switching and actuator assembly will need to be wired
before mounting switch.
The enclosed basic series switch will have one of two contact
forms available. They will either have a single pole double throw
(SPDT) or a double pole double throw (DPDT) arrangement. The
SPDT uses three terminals to wire a set of Common (C), Normally
Open (NO), and Normally Close (NC) contacts.
• Remove the cover or the flange base by loosening the two
screws that secure it.
• Once the cover of the flange base is removed the switch
terminals will be exposed. Switch terminals will be labeled
according to the contact they connect to. Please refer the
terminal layout section for more information on circuit dia-
grams and terminal screw layout.
• Connect wire to terminals by loosening terminal screws,
looping wire around the terminal screw shaft, and inside
of the cup washer on SPDT models or looping wire around
the terminal screw shaft and underneath locking washer on
DPDT models. Then retighten terminal screws ensuring wires
and connections are made.
• Grounding Terminal, enclosed basic switches have an inter
-
nal grounding screw mounted inside the removable cover or
flange base.
• Replace cover or flange base and retighten cover screws
Standard Enclosed Basic Switch Terminal Layout
Single Pole Double Throw (SPDT)
Double Pole Double Throw (DPDT)
