Battery Disconnect Switch

  • Maximum current – up to 10 A
  • For 12, 24, and 48 V accumulators
  • Low voltage signaling
  • Battery protection by fuse
  • Remote disconnect capability
  • DIN rail mounting

The lead-acid battery disconnect is designed to protect the battery from deep discharge and subsequent permanent damage. This can occur during long-term power outages when the equipment is powered from a backup battery. The battery voltage is continuously monitored and compared with reference voltages Uref1, Uref2. If the battery voltage drops below the Uref1 (Uref1 = 10,5 V), the positive pole of the battery is disconnected from the device.

The battery disconnect features reverse polarity protection and short-circuit protection via a user-accessible 10 A safety fuse. The units are designed for a maximum current of 10 A. The value Uref1 = 10,5 V applies to batteries with a nominal voltage of 12 V. For other battery systems (24 V, 48 V), the Uref1 values are 21.0 V and 42.0 V, respectively. The Uref2 value changes accordingly.

Table 1: Technical parameters
Nominal Current 10 A
Nominal Voltage 12; 24; 48 V
Low voltage signaling 11; 22; 44 V
Disconnect Voltage 10,5; 21; 42 V
Battery protection by fuse 10 A
Dimensions 66 × 48 × 46 mm
Weight 80 g
Protection Rating IP 00
Operating Temperature -15 °C to 40 °C

Table 2: Documents
Ikona Brochure

Table 3: Battery Disconnect Switch Models

Model Name Battery Voltage Maximum Current Uref1 Uref2 Pre-disconnect signaling Remote Disconnect Control
OB12V/10A.0 12 V 10 A 10,5 V - - -
OB12V/10A.1 12 V 10 A 10,5 V 11 V Yes -
OB12V/10A.11 12 V 10 A 10 V 11 V Yes Yes
OB24V/10A.0 24 V 10 A 21 V - - -
OB24V/10A.1 24 V 10 A 21 V 22 V Yes -
OB24V/10A.11 24 V 10 A 20 V 22 V Yes Yes
OB48V/2A5.0 48 V 2.5 A 42 V - - -
OB48V/2A5.1 48 V 2.5 A 42 V 44 V Yes -
OB48V/2A5.11 48 V 2.5 A 40 V 44 V Yes Yes
OB12V/20A.0 12 V 20 A 10,5 V - - -
OB24V/20A.0 24 V 20 A 21 V - - -