Installation Sheet 16DEC07 P/N: 3101055 REV: 2.0
RELA-SRV-1 Service Disconnect Switch - RELA-ABT Abort Switch 1 / 2
RELA-SRV-1 Service Disconnect Switch
RELA-ABT Abort Switch
RELA-SRV-1 Service Disconnect Switch
The RELA-SRV-1 Service Disconnect Switch is
a key operated, manual switch station. It has
both a normally closed and normally open dry
contact relay. The switch is used to disconnect
the releasing module for servicing.
Specifications
Voltage and rated average current
30 Vdc at 2 A, 250 Vdc at 1 A, 600 Vac at 3 A
Wire: 12 to 18 AWG
Dimensions: 3.25 x 4.87 x 3.87 in (82 x 124 x 98 mm) (W x H x D)
Installation instructions
To install the RELA-SRV-1:
1. Install the ground screw in the back of the back plate assembly.
2. Connect the lock assembly to the back plate. Pass the threaded
portion of the lock assembly through the back plate and secure it
with the lock nut. Make sure the keyhole is in a vertical position.
3. Push the relay holder onto the back of the lock assembly until it
snaps into place. Make sure the releasing lever is pointed up.
4. Wire the relays. See the “Wiring diagram” for details.
5. Mount the back plate assembly to an existing single gang
electrical box using the #6-32 screws provided.
6. Push the octagon-shaped switch housing piece onto the lock
assembly with “Normal” at the top of the keyhole.
7. Connect the housing cover to the back plate assembly using the
housing screw provided.
Ground screw
Back plate assembly
Back plate mounting
screws
Housing mounting screw
Housing cover
Single gang box
Lock nut
Relay terminal
assembly
Terminal holder
releasing lever
Lock assembly
Octagon-shaped
switch housing piece
You may need to remove the relay holder or a relay to make wiring
easier or you may need to install a different relay. Use the installation
instructions that follow to perform these tasks.
To remove the relay holder:
1. Hold the housing firmly in one hand.
2. Apply downward pressure on the relay holder releasing lever.
3. Remove the relay holder and relays.
To remove a relay:
1. Insert a small screwdriver where the relay connects into the relay
holder.
2. Pry upward to release the relay from the holder.
Relay holder
releasing lever
To install a relay:
1. Insert the bottom of the relay in the bottom slot on the relay
holder.
2. Push upward to lock the relay in place in the top of the relay
holder.
Wiring diagram
A normally closed (NC) and a normally open (NO) relay are provided.
Wire the normally closed relay to the releasing module circuit. Wire the
normally open relay to a supervisory module.
Note: UL requires that the supervisory module must be configured as
a supervisory point and must report to the control panel.
Releasing
module
Supervisory
module
NO relay NC relay
EOL device
To control
panel
Operation
A key is required to operate the RELA-SRV-1. Two keys are provided
with the switch. The key is used to activate and reset the switch. The
key can be removed from the switch in either mode. The switch
disconnects the releasing module for servicing. When activated, an
open event and a supervisory event are indicated at the control panel.
