Relay BDB250 12V/24V 250A

External under- and overvoltage protector with an integrated high-current switch, designed to safeguard Super B Andrena and other lithium power batteries with the lowest possible stand-by current. It auto-detects 12/24 V systems and supports up to 250 A continuous current.

Protects against undervoltage and overvoltage
250 A continuous / 1,500 A peak (100 ms)
Ultra-low standby draw: ~2 mA
12/24 V auto-detect working voltage
Compact footprint: 82 × 57 × 120 mm

Overview

Key specifications

Dimensions (L×W×H)	82 × 57 × 120 mm (3.2″ × 2.2″ × 4.7″)	Weight	370 g (~0.82 lb)
Standby / current consumption	≈ 2 mA	Input surge current (100 ms), 12 V mode	2.6 A
Input surge current (100 ms), 24 V mode	5.0 A	Switch current — continuous	250 A
Switch current — peak	1,500 A	Working voltage	Auto-detect 12/24 V
Undervoltage threshold (12/24 V)	8 V / 16 V	Overvoltage threshold (12/24 V)	15.4 V / 30.8 V
Connector type	Type A