Spec No. 1141 | Rev. 06.15.16 | pg. 1/3
Heard Everywhere Since 1947
with domestic &
international parts
.
Model No
MSM2
Momentary Switch Module
Construction & Features
• Allows equipment connected to a remote power
control or 4-step sequencer to be switched from
multiple locations. The MSM2 is placed between the RPC/sequencer and multiple momentary switches to convert normally open
momentary contact closures to latching, maintained closures, which allows multiple switches
in different locations to activate connected equipment.
• When connected, a momentary closure on any
remote switch causes the MSM2 to change the
state from open to closed or from closed to open,
turning the RPC or sequencer on or off.
• Dual terminal strips connect (2) SPST momentary switches. Additional switches can be added
in parallel (6 total for use with RPC series or 12
with SEQ-4).
• LED indicators display system status (on/off).
• This unit does not require an external power
source as it draws power from the host RPC or
SEQ-4 unit (order separately).
• 5"L x 3.279"W x 1.687"H
• Steel chassis with black powder epoxy finish includes mounting holes and connection diagram.
• Mounts to a rack panel or rack shelf that’s been
punched for electronic devices (Lowell Model
No. USE-210 or USE-310, order separately)
A&E Specifications
The device for converting normally open momentary contact closures to latching maintained closures shall be Lowell Model No. MSM2. It shall
allow for multiple momentary style switches to be
used to activate equipment that is connected to
Lowell RPC series remote power controls or Lowell
SEQ-4 sequence controller.
The MSM2 shall include one terminal strip for connection to remote power control Model No.______
(RPC series) or sequence controller Model No.
SEQ-4. It shall include two terminal strips to connect up to four momentary switches, Model
No.______ (RPSB series) when connected to remote control Model No. ______ (RPC series) host;
or up to 12 momentary switches Model No._____
(RPSB series) when connected to sequence controller Model No. SEQ-4 as a host.
Lowell makes every effort to provide accurate information while reserving the right to change specifications and/or improve manufacturing methods without notification.
©2015 Lowell Manufacturing Company, 100 Integram Dr., Pacific MO 63069 | 800.325.9660 | www.lowellmfg.com
Spec No. 1141 | Rev. 06.15.16 | pg.2/3
Heard Everywhere Since 1947
Drawings
(3) plug-in Phoenixstyle connectors
provided with unit
5.00"
4.50"
3.10"
Terminals will accept
up to 14-ga. wire,
stranded or solid
(2) 7/32"
mounting
holes
1.55"
Compatible Devices (order separately)
Hosts
RPC-15
RPC-15S
RPC-20-CD
RPC-20-SCD
RPC-20-HW
RPC-20-SHW
RPC-30-SHW
ACS-1510-RPC
ACS-2010-RPC-HW
ACS-2018-5C-RPC-HW
SEQ-4
Remote power control (15A, 1 duplex, corded)
Remote power control (15A, 1 duplex, corded, surge supp.)
Remote power control (20A, 1 duplex, corded)
Remote power control (20A, 1 duplex, corded, surge supp.)
Remote power control (20A, 1 duplex, hardwired)
Remote power control (20A, 1 duplex, hardwired, surge supp.)
Remote power control (30A, 1 twistlock, hardwired, surge supp.)
Power strip with remote control (15A, 5 duplex, corded)
Power strip with remote control (20A, 5 duplex, hardwired)
Power strip with remote control (20A, 9 duplex, 5 circuit, hardwired)
Sequence controller
Remote Switches — Momentary Closure
RPSB-MP
Black Decora wall plate switch (rocker switch, LED)
RPSW-MP
White Decora wall plate switch (rocker switch, LED)
RPSB-MKP
Black Decora wall plate switch (key switch, LED)
RPSW-MKP
White Decora wall plate switch (key switch, LED)
RPSB-MR
IU rackmount switch (rocker switch, LED)
RPSB-MKR
IU rackmount switch (key switch, LED)
RPSB2-MP
Black Decora wall plate switch (rocker switch, 2 LEDs)
RPSW2-MP
White Decora wall plate switch (rocker switch, 2 LEDs)
RPSB2-MKP
Black Decora wall plate switch (key switch, 2 LEDs)
RPSW2-MKP
White Decora wall plate switch (key switch, 2 LEDs)
RPSB2-MR
IU rackmount switch (rocker switch, 2 LEDs)
RPSB2-MKR
IU rackmount switch (key switch, 2 LEDs)
(conductors)
3
3
3
3
3
3
4
4
4
4
4
4
Lowell makes every effort to provide accurate information while reserving the right to change specifications and/or improve manufacturing methods without notification.
©2015 Lowell Manufacturing Company, 100 Integram Dr., Pacific MO 63069 | 800.325.9660 | www.lowellmfg.com
Spec No. 1141 | Rev. 06.15.16 | pg. 3/3
Heard Everywhere Since 1947
Typical Application with an RPC Unit
No. RPC-15 shown.
Connections identical
on all RPC models.
Remote Switch Models (3-wire )
RPSB-MP
RPSW-MP
RPSB-MKP
RPSW-MKP
RPSB-MR
RPSB-MKR
On
Three (3)
Conductors
Model MS M-2
Com
V+
Sw
N.C.
On
ON I nd
See Spec/Install sheet
for application details
OFF I nd
Off
R
G
Test
Norm
Three (3)
Conductors
Four (4)
Conductors
On
G
Activated
RPC Series
Remote Power Control Unit
N.O.
+ 24 V DC Out
Connect
to RPC
OFF I nd
Connect t o
MO ME NT ARY
Remot e S witches
Comm on
Remote Switch terminals are
identical. Any switch can be
connected to either terminal
Max number
of switches: 6
Of f
+24V
S wi tch
ON I nd
P ower
Sw
S urge Protect ion A ct ive
When Li t (-S model s only)
V+
Remote Switch Models (4-wire )
RPSB2-MP
RPSW2-MP
RPSB2-MKP
RPSW2-MKP
RPSB2-MR
RPSB2-MKR
Additional RPC units
may be added. Connect
Com and Sw terminals
ONLY.
Wire Size vs Distance
.
22 ga wire: max distance 6,000 ft.
18 ga. wire: max distance 15,000 ft.
.
Toggle (flip/flop) Between two RPC Units
G
R
+24V DC Out
A ct ivated
S wi tch
Comm on
P ower
S urge Protect ion A ct ive
When Li t (-S model s only)
A ct ivated
Comm on
S wi tch
+24V DC Out
Model MSM-2
Connect
to RPC
P ower
RPC Series
Remote Power Control Unit
V+
Sw
ON I nd.
OFF I nd.
Connect t o
MO ME NT ARY
Remot e S witches
Sw
Norm
V+
Test
G
S ee S pec /Inst all sheet
for application details
R
OFF I nd.
G
RPC Series
Remote Power Control Unit
ON I nd.
S urge Protect ion A ct ive
When Li t (-S model s only)
Connect remotes switches
as shown above
Test
G
Norm
+24V
N.O.
Com
N.C.
Of f
On
Lowell makes every effort to provide accurate information while reserving the right to change specifications and/or improve manufacturing methods without notification.
©2015 Lowell Manufacturing Company, 100 Integram Dr., Pacific MO 63069 | 800.325.9660 | www.lowellmfg.com