Odpojovač automatický s časovým zpožděním ATD

The BLUE SEA ATD Automatic Timer Disconnect is a versatile device that can be configured to perform four main functions:

Timed disconnection: Cuts power to devices after a preset delay ranging from 15 minutes to 4 hours once the 12V signal is removed.Low-voltage disconnection: Automatically disconnects devices when battery voltage reaches a configurable low threshold (11.0V, 11.5V, or 12.0V).Automatic Charge Relay (ACR): Automatically combines two battery banks for charging from a single source, then isolates them during discharge.Solenoid: Connects or disconnects a relay without a time delay via a 12V signal.

The nominal operating voltage of the BLUE SEA ATD Automatic Timer Disconnect is 12V DC.

The BLUE SEA ATD Automatic Timer Disconnect has a nominal continuous current rating of 120A.

No, the BLUE SEA ATD is not designed to handle engine cranking currents. If the ATD is used as an automatic charging relay (ACR), it must not be used to combine batteries for emergency starting. A battery switching system with a battery combining/parallel function is recommended if emergency starting may be required.

The timed disconnect duration can be configured using DIP switches 1 to 3 located on the rear of the device. Time options range from 15 minutes to 4 hours. There are also settings to disable the function or for a 5-second test mode.

The low-voltage disconnect threshold can be set using DIP switches 4 and 5. Available options are 11.0V, 11.5V or 12.0V. There is also a setting to disable this function.

Yes, the BLUE SEA ATD Automatic Timer Disconnect is IP67 certified, meaning it is protected against immersion up to 1 meter for 30 minutes.

To comply with nominal current ratings, the minimum recommended cable size is 1 AWG (50mm²). The maximum cable size the terminals can accept is 1/0 AWG (50mm²).

The terminal studs are sized at 3/8"-16 (M10). The recommended tightening torque for these terminals is 140 in-lb (15.82 Nm).

Yes, as an automatic charge relay (ACR), the BLUE SEA ATD is ideal for auxiliary batteries such as AGM or those significantly larger than the starter battery, thanks to its single-sense design that monitors the starter battery voltage.

The "Charge Sense" function (DIP switch 6) allows the ATD to be automatically activated by detecting a charging source (e.g., an engine alternator). If this function is enabled, the ATD will connect if the battery voltage is greater than or equal to 13.0V for 3 seconds. It is useful for reducing wiring by replacing the 12V manual trigger signal.

Yes, the BLUE SEA ATD will disconnect devices if the voltage exceeds 16.0V for 5 seconds or more, providing overvoltage protection.

To prevent corrosion of connection wires and terminals, mount the device in a dry and protected location if possible. Avoid positions directly above battery banks.

Yes, it is possible to connect a remote LED indicator that reflects the state of the LED on the ATD. To do this, connect the positive wire (red) of the LED to a 12V positive source via an inline fuse of 1-10A, and the negative wire (yellow) to the quick-connect terminal marked "LED" on the ATD.

Yes, the BLUE SEA ATD is CE marked for ignition protection. It complies with external ignition protection requirements ISO 8846 and SAE J1171.

The supported input voltage range for the BLUE SEA ATD is 9.5V to 16V.

The "low-voltage disconnect" mode can be used in conjunction with the timed disconnect. In this case, the ATD will disconnect devices based on the set low-voltage threshold, even before the predefined timed disconnect period has elapsed, to preserve battery power.

No, the ATD is not designed to handle the starter motor's inrush currents. If the ATD is used as a disconnect switch, it must not be wired inline with the starter circuit.

Blue Sea Systems supports its products as long as you own them. For detailed information, you can visit the Blue Sea Systems website.

The operating current of the ATD is 175mA in combined mode (when activated) and 4mA in open mode (when deactivated).