Blue Sea Systems 7615 Installation Instructions

ATD Automatic Timer Disconnect
7615
Can be configured to be used as one of the following battery saving products

Timer Disconnect

• 12V signal triggers relay to connect battery power to devices
• When signal is removed the timer is activated and will disconnect devices after a preset time
• Timer ranges from 15 minutes to 4 hours

Low Voltage Disconnect

• 12V signal triggers relay to connect battery power to devices
• After 12V signal is removed, ATD senses low battery voltage and automatically
disconnects devices
• Low voltage setting can be used in conjunction with Timer Disconnect. Low voltage will
disconnect devices prior to preset time to preserve battery power

Automatic Charging Relay

• Automatically combines two batteries when charging, and isolates them when discharging
• Single side sensing design only monitors the voltage of the start battery
• Ideal for auxiliary batteries that are AGM or significantly larger than the start battery

Solenoid

• 12V signal will connect or disconnect relay without any time delay

Specifications

Nominal Voltage
Input Voltage Range
Continuous Rating
Intermittent Rating: 5 min.
(Combine) Amperage Operating Current
(Open) Amperage Operating Current
Cable Size to Meet Current Ratings
Maximum Cable Size
Terminal Stud Size
Terminal Stud Torque
Time Range
Charge Sense ON
Connected (3 sec)
Timing (10 sec)
Low Voltage
Disconnected (10 sec)
Over Voltage
Disconnected (5 sec)
Regulatory
CE marked for ignition protection. Meets ISO 8846 and SAE J1171 external ignition
protection requirements
IP67 - protected against immersion up to 1 meter for 30 minutes
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.
980025450 Rev.002
12V DC
9.5–16V
120A
210A
175mA
4mA
1 AWG (50mm²)
1/0 AWG (50mm²)
3/8"-16 (M10)
140 in-lb (15.82 Nm)
15 Minutes – 4 Hours
13.0V or greater
12.75V or lower
Battery Voltage < Disconnect Voltage
16.0V or greater
Installation Instructions
WARNING
Refers to a potentially hazardous situation which, if not avoided, may result in death or serious injury.
Before beginning electrical installation, disconnect all AC and DC power sources.
Do not service equipment that has been automatically disconnected by the ATD without first permanently
removing power from the equipment by a means other than the ATD.
DC AC
CAUTION
Refers to a potentially hazardous situation which, if not avoided, may result in minor or moderate injury.
If you are not knowledgeable about electrical systems, consult an electrical professional.
To avoid corrosion to connecting wires and terminals, mount in a dry and protected location if possible.
Avoid locations directly above the battery banks.
The ATD is not intended to carry engine starting currents. If the ATD is used as a disconnect, do not wire it in
line with the starting circuit. If the ATD is used as an ACR, do not use it to combine batteries for emergency
starting. Use a battery switching system with a combine batteries/parallel function if batteries may need to be
combined for emergency starting.
Minimum connections for operation:
- Connect the primary/starting battery to the stud marked BATT.
- Connect the loads to be disconnected to the stud marked LOAD (or connect the secondary/house
battery for ACR applications).
- Connect the quick connect terminal marked GND (ground) to the DC system ground.
- Start key / Ignition: Used to trigger the ATD to connect. Wire the quick connect terminal marked "Start
Key" through a 1-10A fuse to the accessory position of your ignition switch to enable the ATD to close
when the ignition is on.
NOTE: The Start key / Ignition connection is optional if and only if the "Charge Sense" DIP switch is enabled, in
which case the ATD will be triggered to connect if battery voltage is above 13.0V for 3 seconds.
Optional Connection:
Remote Indicator LED - mirrors the status LED on the ATD
- Appropriate 12V LEDs include Blue Sea Systems PNs 8033 (amber), 8171 (red), or 8172 (green).
- To install a remote LED indicator, connect the positive (red) wire of the LED to a 12V positive source
through a 1-10A inline fuse, and connect the negative (yellow) wire to the quick connect terminal on the
ATD marked "LED".
Dimensioned Drawings