Download Relay Boards

DS26.04.2013
Relay Boards
Features
24V DC operated
LED indicator shows relay operated
Two changeover contacts per relay
Built in suppression diodes
Spring leaf 2.5mm capacity terminals
Small footprint
2 Amp 30V DC contact rating
Low current consumption
Single (RL1) and Four (RL4)
Way Relay PCB
K375 - RL1 Single Way Relay PCB
Product Overview
This simple board contains a single 24V DC relay, which can be
used for any extra low voltage switching applications.
It has two changeover contacts, an LED indicator to show
when the coil is energised and a polarising diode to prevent
damage to the power source by reverse polarity connection.
The contacts are suitable for switching a maximum of 30V DC
and 2 Amps. Voltages or currents that exceed these values
should not be connected under any circumstances.
The current consumption of the unit when operated from a 24V
supply is approximately 25mA.
The PCB has four 4mm mounting holes, which will accept the
self adhesive standoffs supplied. The use of self adhesive
standoffs should be carefully considered however due to their
tendency to become detached over a period of time and a more
permanent fixing method is recommended.
K376 - RL4 Four Way Relay PCB
Product Overview
This simple board contains four 24V DC relays, which can be
used for any extra low voltage switching applications.
Each relay has two changeover contacts, and an LED indicator
to show when the coil is energised. The coils of the relays are
commoned to the positive supply and the relays can be
operated individually by switching a negative to the numbered
coil inputs.
The contacts are suitable for switching a maximum of 30V DC
and 2 Amps. Voltages or currents that exceed these values
should not be connected under any circumstances.
The current consumption of the unit when operated from a 24V
supply is approximately 25mA per relay.
The PCB has four 4mm mounting holes, which will accept the
self adhesive standoffs supplied. The use of self adhesive
standoffs should be carefully considered however due to their
tendency to become detached over a period of time and a more
permanent fixing method is recommended.
RL1- Single Way
Relay PCB (K375)
RL4- Four Way Relay
PCB (K376)
NC
NO
COIL
NC C NO
ALARM
CONTACT
S1
X1
NC
C
NO
L2
L1
NC
L3
R3
RL2
RL1
D1
NO
SERIAL NUMBER
RELAY 2
C
NO
L4
RL3
C
NO
RL4
NC
C
NO
RELAY 3 RELAY 4
RELAY 1
RL4
NC
C
CONTACT 2
S2
R4
Example sounder interface
of two K3000S fire panels
AL 0V
ALARM
INPUT
NO NC
D4
S2
C
CONTACT 1
LK1
C
CONTACT 2
D3
S1
NO NC
CONTACT 1
R2
ALARM
CONTACT
RL1
D2
NC C NO
RL1
R1
AL 0V
ALARM
INPUT
C
L1
Miscellaneous Items
NC
COIL
L1
1 NC C NO 2 NC C NO 3 NC C NO 4 NC C NO
RELAY 1
RELAY 2
RELAY 3
RELAY 4
The manufacturer reserves the right to amend specifications without prior notice