Item# 7621

500 Amp magnetic latching (bi-stable) relay automatically combines batteries during charging and isolates batteries when discharging and when starting engine.

Features:

• Includes ML-Series Remote Control Contura Switch PN 2146
• Automatically manages the charging of two large battery banks
• Allows paralleling of battery banks for emergency starting
• 500 Ampere continuous rating to support high-output alternators
• Magnetic Latch (ML)—ACR draws very low current (<40mA to monitor terminal voltage) in the "ON" or "OFF" states, and draws moderate current for very short time when changing state
• Dual sensing—senses charge on both battery banks
• 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
• Senses charging on two battery banks
• LED output to remotely indicate when batteries are combined, isolated, in voltage lockout, or in Start or Engine isolation
• 3/8"-16 tin-plated copper studs for maximum conductivity and corrosion resistance
• 7/8" (22mm) stud length accepts multiple cable terminals
• Silver alloy contacts provide high reliability for switching live loads
• Label recesses for circuit identification

Specifications:

• Control Circuit Connection: Tinned Wire
• Nominal Voltage:24V DC
• Manual Control: No
• Engine Isolation: Yes
• Mounting:10
• Start Assist: Yes
• Start Isolation: Yes
• Amperage Operating Current:13mA
• Amperage Operating Current when changing state<7.0A
• Terminal Stud Torque140 in-lb (15.82 Nm)
• Continuous Rating 500A
• Intermittent Rating 700A (5 min)
• Cranking Rating 30 sec 1450A DC
• Minimum Operating Temperature-10° C
• Maximum Operating Temperature 60° C
• Cable Size to Meet Ratings 4/0 AWG x 2
• Live Current Switching300A 12V DC
• Stud Material Tinned Copper
• Switching Cycles100000
• Terminal Ring Diameter Clearance1.12in (28.45 mm)
• Terminal Stud Length1.50in (38.1 mm)
• Terminal Stud Size3/8" - 16 (M10)
• Wire Size20 AWG

• Relay Contact Position

• Combine 30 sec27.0V
• Combine 90 sec26.0V
• Open 10 sec24.7V
• Open 30 sec25.5V
• Open High32.4V
• Weight2.08lb (0.94 kg)