
Blue Sea 7623 ML-Series Heavy Duty Automatic Charging Relay - 24V [7623]
Blue Sea 7623 ML-Series Heavy Duty Automatic Charging Relay - 24V [7623]
Description
500 Amp magnetic latching (bi-stable) relay automatically combines batteries during charging and isolates batteries when discharging and when starting engine
Features:
- Manual control switch provides an added level of safety allowing control with or without power, and offering "Locked Off" capability for servicing
- Includes ML-Series Remote Control Contura Switch PN 2146
- 500 Ampere continuous rating
- Magnetic Latch (ML)-ACR draws very low current (<10 mA to monitor terminal voltage) in the "ON" or "OFF" states, and draws moderate current for very short time when changing 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
- Senses charging on two battery banks
- Supports high-output alternators up to 500 Amps
- LED output to remotely indicate when batteries are combined, isolated, in voltage lockout, 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
- Label recesses for circuit protection
- Silver alloy contacts provide high reliability for switching live loads
Product Specifications
Blue Sea 7623 ML-Series Heavy Duty Automatic Charging Relay - 24V [7623] Product Specifications
| Specification | Value |
|---|---|
| Control Circuit Connection | Tinned Wire |
| Nominal Voltage | 24V DC |
| Manual Control | Yes |
| Engine Isolation Condition | Yes |
| Start Assist Condition | Yes |
| Start Isolation Condition | Yes |
| Mounting | #10 |
| Amperage Operating Current | 13mA @ 25°C nominal VDC |
| Amperage Operating Current (changing state) | <7.0A |
| Terminal Stud Torque | 140 in-lb (15.82 Nm) |
| Continuous Rating | 500A |
| Intermittent Rating (5 min) | 700A |
| 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 Switching | 300A @ 12V DC |
| Stud Material | Tinned Copper |
| Switching Cycles | 100,000 |
| Terminal Ring Diameter Clearance | 1.12 in (28.45 mm) |
| Terminal Stud Length | 1.50 in (38.1 mm) |
| Terminal Stud Size | 3/8"-16 (M10) |
| Wire Size | 20 AWG |
| Relay Contact Position - Combine (30 sec) | 27.0V |
| Relay Contact Position - Combine (90 sec) | 26.0V |
| Relay Contact Position - Open (10 sec) | 24.7V |
| Relay Contact Position - Open (30 sec) | 25.5V |
| Relay Contact Position - Open High | 32.4V |
| Weight | 2.10 lb (0.95 kg) |
WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.
Product Manual
Blue Sea Instructions
Owner's Manual (pdf)
Brochure (pdf)
Product Warranty
Blue Sea Systems Product Warranty
Blue Sea Systems stands behind its products for as long as you own them. Blue Sea Systems will replace or issue a credit for any of its products found to be defective in materials or manufacture. P12 Battery Chargers, P12 Remote Displays, BatteryLink Chargers, Sure Eject AC Disconnects, M2 OLED Digital Meters and Mini OLED Digital Meters are warranted for a period of five years from the date of first purchase.Ā
All other Digital Meters are warranted for a period of three years from the date of first purchase. No compensation will be allowed for products not returned to Blue Sea Systems for analysis, nor will compensation be made for labor required to replace any defective product. Please contactĀ Customer Service for an RMA number prior to shipping any product back to Blue Sea Systems.
Product FAQs
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Original: $228.99
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Product Information
Shipping & Returns
Shipping & Returns
Description
Blue Sea 7623 ML-Series Heavy Duty Automatic Charging Relay - 24V [7623]
Description
500 Amp magnetic latching (bi-stable) relay automatically combines batteries during charging and isolates batteries when discharging and when starting engine
Features:
- Manual control switch provides an added level of safety allowing control with or without power, and offering "Locked Off" capability for servicing
- Includes ML-Series Remote Control Contura Switch PN 2146
- 500 Ampere continuous rating
- Magnetic Latch (ML)-ACR draws very low current (<10 mA to monitor terminal voltage) in the "ON" or "OFF" states, and draws moderate current for very short time when changing 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
- Senses charging on two battery banks
- Supports high-output alternators up to 500 Amps
- LED output to remotely indicate when batteries are combined, isolated, in voltage lockout, 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
- Label recesses for circuit protection
- Silver alloy contacts provide high reliability for switching live loads
Product Specifications
Blue Sea 7623 ML-Series Heavy Duty Automatic Charging Relay - 24V [7623] Product Specifications
| Specification | Value |
|---|---|
| Control Circuit Connection | Tinned Wire |
| Nominal Voltage | 24V DC |
| Manual Control | Yes |
| Engine Isolation Condition | Yes |
| Start Assist Condition | Yes |
| Start Isolation Condition | Yes |
| Mounting | #10 |
| Amperage Operating Current | 13mA @ 25°C nominal VDC |
| Amperage Operating Current (changing state) | <7.0A |
| Terminal Stud Torque | 140 in-lb (15.82 Nm) |
| Continuous Rating | 500A |
| Intermittent Rating (5 min) | 700A |
| 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 Switching | 300A @ 12V DC |
| Stud Material | Tinned Copper |
| Switching Cycles | 100,000 |
| Terminal Ring Diameter Clearance | 1.12 in (28.45 mm) |
| Terminal Stud Length | 1.50 in (38.1 mm) |
| Terminal Stud Size | 3/8"-16 (M10) |
| Wire Size | 20 AWG |
| Relay Contact Position - Combine (30 sec) | 27.0V |
| Relay Contact Position - Combine (90 sec) | 26.0V |
| Relay Contact Position - Open (10 sec) | 24.7V |
| Relay Contact Position - Open (30 sec) | 25.5V |
| Relay Contact Position - Open High | 32.4V |
| Weight | 2.10 lb (0.95 kg) |
WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.
Product Manual
Blue Sea Instructions
Owner's Manual (pdf)
Brochure (pdf)
Product Warranty
Blue Sea Systems Product Warranty
Blue Sea Systems stands behind its products for as long as you own them. Blue Sea Systems will replace or issue a credit for any of its products found to be defective in materials or manufacture. P12 Battery Chargers, P12 Remote Displays, BatteryLink Chargers, Sure Eject AC Disconnects, M2 OLED Digital Meters and Mini OLED Digital Meters are warranted for a period of five years from the date of first purchase.Ā
All other Digital Meters are warranted for a period of three years from the date of first purchase. No compensation will be allowed for products not returned to Blue Sea Systems for analysis, nor will compensation be made for labor required to replace any defective product. Please contactĀ Customer Service for an RMA number prior to shipping any product back to Blue Sea Systems.
Product FAQs
N/A











