Marine Electrical Prod
ucts
ML– Series
Remote Battery Switches (with manual control)
PN 7700 / PN 7702
Solenoid Switches (without manual control)
PN 7701 / PN 7703
• Magnetic Latch—draws no current in ON or OFF state, only draws current when changing state of switch
• Silver alloy contacts provide high reliability for switching live loads
• Manual control override knob provides an added level of safety allowing control with or without power, and
offering LOCKED OFF capability for servicing (Remote Battery Switch ONLY)
• LED output to remotely indicate switch state
• Tin-plated copper studs for maximum conductivity and corrosion resistance
• Label recesses for circuit identication
Specications 12V DC 24V DC
Cranking Rating See table below See table below
Intermittent Rating See table below See table below
Continuous Rating See table below See table below
ML-Coil Function Bi-Stable Bi-Stable
Contact Circuit Voltage 32V DC Max. 32V DC Max.
Coil Voltage 9-16V DC 18-32V DC
Amperage Operating Current <0 mA continuous <0 mA continuous
<7A when changing state (20 ms) <4A when changing state (20 ms)
Remote Control Switch Current <100 mA <100 mA
Terminal Stud Size 3/8"-16 3/8"-16
Maximum Terminal Stud Torque 140 in-lb (15.8 N•m) 140 in-lb (15.8 N•m)
Ring Terminal Size 3/8" (M10) 3/8" (M10)
Terminal Ring Diameter Clearance 1.18" (30 mm) 1.18" (30 mm)
Live Current Switching 10,000 Cycles (300A@12V DC) Mechanical Switching 100,000 Cycles 100,000 Cycles
PN 2145 Switch
Action Momentary SPDT (ON)-OFF-(ON)
Seals Internal & External Gasket Panel Seal
Mounting Hole 0.83"x 1.45" (21.08 mm x 36.83 mm)
LED Rating 100,000 hours 1/2 life
Regulatory Meets ISO 8846 and SAE J1171 external ignition protection requirements, CE marked, Rated IP66
Wire Size and Current Ratings
AWG Metric (mm²) Cranking 10 sec. Cranking 1 min. Intermittent 5 min. Continuous (UL 1107)
2/0 70 2,000A 750A 400A 225A
4/0 120 2,200A 750A 400A 300A
2x (4/0) 2x (120) 2,500A 1,100A 700A 500A
The ML-Series Remote Battery Switch/Solenoid Switch provides high-current carrying and
switching under load. The Remote Battery Switch/Solenoid Switch is installed close to the battery banks.
A single pole double throw (SPDT) Control Switch Panel, or two momentary push button switches, operate
the Remote Battery Switch/Solenoid Switch. Control Switches are installed in a convenient location near
other electrical controls or companionway (see Illustrations on reverse).
Overview of Application
The Manual Control Override Knob provides (Remote Battery Switch Only):
• an added level of safety that allows manual ON-OFF control with or without power
• LOCK OFF for servicing the electrical system
A remote LED (sold separately) indicates a closed connection between battery bank and load, or between
two battery banks when used as an emergency cross-connect.
Remote Operation. The momentary (SPDT) (ON)-OFF-(ON) Remote Control Contura Switch can
provide cross connect and/or battery isolation. The Control Switch should be mounted in a convenient location near helm controls to allow for quick access.
To connect battery bank to load, or combine
battery banks
To disconnect battery bank from load, or
isolate battery banks that are connected
Momentarily depress control switch actuator to “ON”.
Remote LED indicates closed connection.*
Momentarily depress control switch actuator to “OFF”.*
Emergency Manual Control Override Operations (Remote Battery Switch Only)
To connect battery bank to load,
or combine battery banks
To disconnect battery bank from
load, or isolate battery banks that
are connected
To prevent remote operation
To secure for servicing
* If the Control Switch is held ON or OFF for 5 seconds, the internal coil protection will engage and the
Remote Battery Switch/Solenoid Switch will not respond to further remote input for approximately
10 seconds.
With Override Knob in (REMOTE position),
push button until latched (Push to Latch On).
Rotate Override Knob to right to release button
from Latch On mode (button pops up). Rotate
Override Knob to left (REMOTE position).
Rotate Override Knob to right
(LOCK OFF position).
With Override Knob in (LOCK OFF position),
pass cable tie through hole.
1
2
Solenoid Switch
PN Termination
7701 Tinned Wires No 12V DC
7703 Tinned Wires No 24V DC
Blue Sea Systems Inc. Phone (360) 738-8230
425 Sequoia Drive Fax (360) 734-4195
Bellingham, WA 98226 USA conductor@bluesea.com
990180170 Rev.004
Manual
Control
Control
Circuit
PN Termination
7700 Tinned Wires Yes 12V DC
7702 Tinned Wires Yes 24V DC
Remote Battery Switch
Manual
Control
Control
Circuit
www.bluesea.com
+VDC, 24 HR. (red)
A
B
+VDC, TO CLOSE (brown)
+VDC, TO OPEN (orange)
LED OUTPUT (yellow)
GROUND (black)
START
BATTERY
ENGINE
LED
1
2
3
+8
-7
CONTROL SWITCH
(not included)
Momentary SPDT
(ON)-OFF-(ON)
2 AMP MIN.
10 AMP MIN.
CAUTION
] These instructions are intended to provide assistance with the installation of this product, and are
not a substitute for a more comprehensive understanding of electrical systems. We strongly
recommend that a competent electrical professional perform the installation of this product.
]The illustrated wiring diagram represents a common installation and is not meant to be a guide for wiring
a specic vessel. The wiring diagram shows a single battery bank installation.
]Disconnect all negative battery connections before beginning the installation.
]All unused control wires should be carefully insulated from each other and from accidental contact
using heat shrink tubing or electrical tape. External contact or shorting between control wires can lead
to malfunction.
Installation Instructions
Mounting
Install as close as possible to battery bank. To avoid corrosion to connecting wires and terminals, mount in
a dry and protected location. Avoid mounting directly above vented lead acid batteries so that the Remote
Battery Switch/Solenoid Switch is not exposed to corrosive gasses expelled from the batteries.
High Current Primary Circuit Connections (stud terminals A and B)
For help selecting the appropriate wire size and circuit protection rating, go to www.bluesea.com and click the
Circuit Wizard quick link.
NOTE: Stud terminals A and B are interchangeable. The load can be connected to A or B; the battery bank
can be connected to A or B.
To connect high current circuit wires:
1. Connect the battery bank to one of the stud terminals marked A or B.
2. Connect the load to the other stud terminal marked B or A.
3. Torque the high current terminal stud nuts to 140 in-lbs (15.8 N•m) maximum.
NOTE: If switching an inverter, windlass, bow thruster, etc., the circuit wires must have circuit protection to
comply with ABYC guidelines. Wires used for engine starting do not require circuit protection.
Control Circuit Connections (wires contained in the wire harness)
NOTE: The Remote Battery Switch/Solenoid Switch is designed to be controlled by momentary SPDT switch,
(included), or two momentary push button switches. Use minimum 16 AWG wire for the Control Circuit.
To connect DC power to the Remote Battery Switch/Solenoid Switch Control Circuit:
1. Connect the red wire through a 10A (min) circuit protection device to DC+. The power source should be
a direct connection to the battery.
2. Connect the black wire to DC ground.
To connect the momentary SPDT Contura Control Switch:
1. Connect the common load terminal of the Control Switch, pin 2, through a 2A (min) circuit protection device
to DC+. Use a 24-hour power source (connected directly to the battery).
2. Connect the brown wire to the CLOSE side of the Control Switch, pin 3.
3. Connect the orange wire to the OPEN side of the Control Switch, pin 1.
4. Connect the LED power terminal of the Control Switch, pin 8, through 2A (min) circuit protection
device to DC+. Note: This connection can share the same wire/fuse as step #1 above, (see diagram).
5. Connect the LED Ground terminal of the Control Switch, pin 7, to the yellow wire of the
Remote Battery Switch.
Guarantee
Blue Sea Systems stands behind its products for as long as you own them.
Find detailed information at www.bluesea.com/about.
For customer service, call 800-222-7617.
1.965"
49.91mm
5.47"
138.94mm
4.50"
114.30mm
1.010"
25.65mm
Installation Instructions
1.125"
.595"
15.10mm
3.75"
95.25mm
3.00"
76.20mm
28.58mm
51.56mm
2.03"
1.450"
36.83mm
1.90"
48.26mm
0.830"
21.08mm
TEST CUT
HOLE IN
ACTUAL
CENTER
1.03"
26.16mm
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