Securitron RB-4-12, RB4-24 Installation Instructions
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SECURITRON MODEL RB4-12, RB4-24 RELAY BOARD
INSTALLATION AND OPERATING INSTRUCTIONS
1. DESCRIPTION
The RB4 board mounts four double pole, double throw relays with connection points to the coils
and contacts being implemented on screw terminals. The boards are furnished on Snap Trak
mounting permitting their installation in a variety of situations. The relays provide 2 Amp
contacts on each pole. The 12 volt version of the board uses relays that draw 13 mA each and
the 24 volt version uses relays that draw 8 mA each. The relays operate on DC only but will
accept +50%, -25% of nominal voltage. Pulsating DC (transformer + bridge rectifier) will
operate the relays. According to the status of jumper wires, the relays may be operated with
one side of their coils in common or they may be fully isolated from each other.
2. WIRING
Figure 1 shows terminal identification. As factor y delivered with the four wire jumpers in place,
the “negative” coil terminals (-1, -2, -3, -4) are all in common. So to operate the relays, simply
apply 0 DC (negative) to any of the “-” coil terminals and then individually apply +DC to each
“+” coil terminal to operate the respective relay. Note that the relays are not polarized so
you can reverse this scheme if desired. +DC can be applied to any of the “-” coil terminals
and then the relays can be individually operated by applying 0 DC (negative) to each “+”
terminal.
DC
COIL
INPUTS
+1 -1 +2 +3
-2
+4
-3 -4
JUMPERS
CONTACTS
NO1
NC1
FIGURE 1: RB-4 WIRING
#1 #2 #3 #4
RELAY 1 RELAY 2 RELAY 3
NO2
1A 1B 2A 3A
NC2
1A 1B 2A 3A
C2
C1 C2C1 C1 C1C2C2
1A 1B 2A 3A
NO2
NO1 NO1
2B
NC1
NC2 NC2 NC2
2B
2B
NO2
3B 4B
NC1
3B 4B
3B
RELAY 4
NO1
NO2
4A
NC1
4A
4A
4B
The four wire jumpers are normally left connected but may b e cut for a special requirement.
In some applications, the voltage inputs that switch on the relays may be from more than one
power supply and you will not want to mix the supply voltages by putting them in common.
When the associated jumper is cut, the coil terminals are totally isolated. Therefore
different power sources can independently operate each relay, if desired.
3. MAGNACARE LIFETIME REPLACEMENT WARRANTY
For warranty information visit: www.securitron.com/en/site/securitron/About/MagnaCare-Warranty/
© Copyright, 2011, all rights reserved PN# 500-13900
Page 1 Rev. D, 05/11
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