Blue Sea Systems 7727 SafetyHub 250 Fuse Block and Solenoid with Manual Control - Manual (Page 2)

Mounting
Install the SafetyHub in a readily accessible location as close as possible to the
battery. Mount in a dry and protected location. Avoid mounting directly above
vented lead acid batteries so that the SafetyHub is not exposed to corrosive
gasses from the batteries.
Where possible, mount the SafetyHub in a vertical orientation.
(see illustration 1.1 below)
For help selecting the appropriate wire size and circuit protection rating,
go to www.circuitwizard.bluesea.com
High Current Input / Remote Battery Switch Connection
Connect the positive battery terminal to the input stud on the SafetyHub.
Torque the connection to 15 ft-lb.
High-Amperage Switched Fuse Circuit Connections
To connect high amperage loads such as an engine starting circuit, distribution
panel, or windlass, use the numbered high amperage studs.
CAUTION Do not switch the Remote Control Switch to OFF while
the engine is running!
Unswitched Fuse Circuit Connections
The fuse connections labeled with letters are designed to be used for circuits
that are always on. PN 7727 includes a wire harness to connect to the
ATO ® /ATC ® fuse connector plug receiver.
Control Circuit Connections (wires contained in the wire harness)
NOTE: The SafetyHub is designed to be controlled by the Remote Control
Switch. Use minimum 18 AWG (1.5mm²) wire for the control circuit.
Remote Control Switch Dimensions
Installation Instructions
1.965"
49.91mm
1.010"
25.65mm
.595"
15.10mm
1.125"
28.58mm
TEST CUT
HOLE IN
ACTUAL
CENTER
1.450"
36.83mm
0.830"
21.08mm
Connector Pin Wire Insulation Color Circuit Function
1 Black External negative
2 N/A No connection
3 Yellow LED controlled negative
4 Red Switch power source
5 Orange Control signal
6 N/A No connection
Installation Instructions
(continued)
SWITCHED CIRCUITS
24-HOUR (NON-SWITCHED) CIRCUITS
MOUNTING
HOLES X2
A
B
C
D
1 2 3
PIN OUT Table
Note: Wires used
for engine starting
do not require circuit
protection. If you
choose not to fuse the
engine starting circuit,
use the PN 7732
Engine Circuit Link Bus
(included) instead of a
MIDI
® /AMI ® fuse. Do
not use this link for
any other purpose.
Illustration 1.2 - System Diagram
Illustration 1.1 - Mounting Orientation
Mount the SafetyHub 250 vertically as shown in
illustration, and in a dry and protected location.
Engine Link Bus
(included)