ARP Series Alternating Relay Features:

Alternating Relay
ARP Series
The ARP Series is used in systems where equal
run time for two motors is desirable. The selector
switch allows selection of alternation of either load
for continuous operation. LED’s indicate the status
of the output relay. This versatile series may be
front panel mounted (BZ1 accessory required) or
35 mm DIN rail mounted with an accessory socket.
For more information see:
Appendix B, page 167, Figure 31 for dimensional drawing.
Appendix C, 170, Figure 29 for connection diagram.
Features:
• Provides equal run time for two motors
• Alternating or electrically locked operation
• Low profile selection switch
• 10A output contacts
• LED status indication
• Industry standard base connection
Approvals:
Auxiliary Products:
Operation
Alternating: When the rotary switch is in the “alternate” position, alternating operation of Load A and Load B
occurs upon the opening of the control switch S1. To terminate alternating operation and cause only the selected
load to operate, rotate the switch to position “A” to lock Load A or position “B” to lock Load B. The LEDs indicate
the status of the internal relay and which load is selected to operate.
Note: Input voltage must be applied at all times for proper alternation. The use of a solid-state control switch
for S1 may not initiate alternation correctly. S1 voltage must be from the same supply as the unit’s input
voltage (see connection diagrams). Loss of input voltage resets the unit; Load A becomes the lead load for
the next operation.
Duplexing (Cross Wired): Duplexing models operate the same as alternating relays and when both the Control
(S1) and Lag Load (S2) Switches are closed, Load A and Load B energize simultaneously.
The DPDT 8-pin, cross-wired option, allows extra system load capacity through simultaneous operation of both
motors when needed. Relay contacts are not isolated.
Order Table:
ARP
X
Input
─2 - 24VAC
─4 - 120VAC
─6 - 230VAC
X
Output Form
─1 - SPDT, 8-pin
─2 - DPDT, 11-pin
─3 - DPDT, 8-pin
cross wired
• Hold-down c lips (sold i n p airs):
P/N: PSC8 (NDS-8)
P/N: PSC11 (NDS-11)
• Panel mount kit: P/N: BZ1
• 11-pin socket: P/N: NDS-11
• 8-pin socket: P/N: NDS-8
• DIN rail: P/N: C103PM
Available Models:
ARP23S
ARP41
ARP41S
ARP42S
ARP43
ARP43S
ARP61S
ARP63
ARP63S
If desired part number is not listed, please call us to
see if it is technically possible to build .
X
Switch Operation
─Blank - No Switch
─S - Rotary Switch
Specifications
Input
Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24, 120, or 230VAC
Tolerance
24VAC . . . . . . . . . . . .-15% - 20%
120 & 230VAC . . . . . . . . . . . .-20% - 10%
AC Line Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . .50/60Hz
Output
Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Electromechanical relay
Form . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .SPDT, DPDT, or cross wired DPDT
Rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10A resistive @ 120/240VAC & 28 VDC;
1/3 hp @ 120/240VAC
Maximum Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . .250VAC
Life . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Mechanical - 1 x 107; Electrical - 1 x 106
www.ssac.com • 800-843-8848 • fax: 605-348-5685
Protection
Isolation Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .≥ 1500V RMS input to output
Mechanical
Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Plug-in socket
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3.2 x 2.39 x 1.78 in. (81.3 x 60.7 x 45.2 mm)
Termination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Octal 8-pin or magnal 11-pin
Environmental
Operating / Storage Temperature . . . . . . . . . . . . . . .-20° to 60°C / -30° to 85°C
Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .≅ 5.6 oz (159 g)
NOTE: Unit does not have debounce time delay.
135
Courtesy of Steven Engineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-www.stevenengineering.com

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