BlueSea Systems 2023 Catalog BATTERY MANAGEMENT 51 Related Products ML-Series Automatic Charging Relays (ACR) 500A magnetic latching relay automatically combines batteries during charging and isolates batteries when discharging and when starting engine • Magnetic Latching (ML) relay draws very low current in the ON state • Start Isolation (SI) can be configured for temporary isolation of House loads from Engine circuit during engine cranking to protect sensitive electronics • Engine Isolation (EI) can be configured for isolation of two engines while both are running to protect engine electronics and maximize alternator output • Manual override knob provides an added level of safety allowing control with or without power and offering LOCKED OFF capability for servicing • Senses charging on two battery banks • LED output to remotely indicate switch state - requires optional LED (p. 153) or Remote Control Contura Switch with integrated LED (included in retail package) • 3/8"-16 tin-plated copper studs for maximum conductivity and corrosion resistance • One-piece stainless flange nuts ensure safe and secure connections Silver alloy contacts provide high reliability for live switching • Retail packaging includes a Remote Control Contura Switch (p. 93) Part # Coil Volts Cable End Manual Control 7620 12V DC Stripped Wire No 7620100 12V DC Deutsch DTM No 7622 12V DC Stripped Wire Yes 7622100 12V DC Deutsch DTM Yes 7621 24V DC Stripped Wire No 7621100 24V DC Deutsch DTM No 7623 24V DC Stripped Wire Yes 7623100 24V DC Deutsch DTM Yes 7620 ML-Series Remote Battery Switches page 43 Remote Control Switch 360 Panels page 94 7622 Wire Size and Current Ratings MRBF Terminal Fuse Blocks page 68 For the full list of specifications see page 53 For the dimension drawing see page 43 Wire Size Cranking 30 sec. Intermittent 5 min. Continuous (UL 1107) 2/0 AWG (70 mm²) 1,000A 400A 225A 4/0 AWG (120 mm²) 1,100A 400A 300A 2× 4/0 AWG (2x 120 mm²) 1,450A 700A 500A Paralleling Link Bus page 43 (see table) LEDs page 153 Duetch DTM Cable End now offered for both retail and bulk units. Other connector plugs are available for high volume OEM applications. Remote Control Contura Switch included in retail package Stud Mount Insulators page 108 Live Current Switching 300A @ 12V DC-10,000 Cycles Relay Contact Position 12V DC 24V DC Combine (30 sec.) 13.5V DC 27.0V DC Combine (2 min.) 13.0V DC 26.0V DC Open (10 sec.) 12.35V DC 24.7V DC Open Low (30 sec.) 12.75V DC 25.5V DC Over Voltage Lockout 16.2V DC 32.4V DC Under Voltage Lockout 9.6V DC 19.2V DC Under Voltage Recovery 10.0V DC 20.0V DC Regulatory CE marked, meets ISO 8846 and SAE J1171 external ignition protection requirements IP66 - protected against powerful water jets (see inside back cover) IGNITION PROTECTED