ML-ACR Automatic Charging Relay with Manual Control - 12V DC 500A
Blue Sea Systems
Recommended Retail Price
£411.40 Inc. VAT
Online Price (inc. VAT)
£282.84
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500 Amp magnetic latching (bi-stable) relay automatically combines batteries during charging and isolates batteries when discharging and when starting engine
- Manual control switch provides an added level of safety allowing control with or without power, and offering LOCK OFF capability for servicing
- 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 | 12V DC |
| Manual Control** | Yes |
| 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 Torque | 140 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 Switching | 300A @ 12V DC |
| Stud Material | Tinned Copper |
| Switching Cycles | 100000 |
| Terminal Ring Diameter Clearance | 1.12in (28.45 mm) |
| Terminal Stud Length | 1.50in (38.1 mm) |
| Terminal Stud Size | 3/8" - 16 (M10) |
| Wire Size | 20 AWG |
| Relay Contact Position | |
| Combine 30 sec | 13.5V |
| Combine 90 sec | 13.0V |
| Open 10 sec | 12.35V |
| Open 30 sec | 12.75V |
| Open High | 16.2V |
| Weight | 2.06lb (0.93 kg) |
*Provided on retail units
**Manual control switch provides an added level of safety allowing control with or without power, and offering LOCK OFF capability for servicing.
***Condition: Two engines are running
- One relay is open and one relay is closed
- Engine 1 Start and Engine 2 Start batteries are isolated to protect engine electronics
****Condition: Engine starting
- Relay is closed combining batteries
- Batteries are combined to share power in the event of a low start battery
*****Condition: Engine starting
- Relay is open isolating batteries
- Batteries are isolated to protect sensitive electronics from voltage sags and spikes
******@ 25°C nominal VDC
*******The maximum current a switch is designed to conduct for an indefinite period.
********The maximum amount of current a switch is designed to carry for a minimum of a designated period of time.
*********Normally associated with 'cranking current' which is the current required by the starter circuit prior to engine starting. The cranking current varies significantly during the starting cycle. Initially, there is a large surge of current required to overcome the inertia and compression of the engine. This surge can be two to four times the average cranking current. Once the engine is turning there are peaks and valleys as the pistons go through the compression and exhaust cycles. The cranking current rating is used for sizing batteries, cables, and battery switches.
Showroom & Postal Address:
Chas Newens Marine Company Limited
Ashlone Wharf Boat Yard
Embankment
Putney
London
SW15 1LB
Phone:
0208 788 4587
Delivery
Our Mail Order team ship chandlery, yacht parts and sailing clothing around the world. We try to use the best value couriers available, and we will endeavour to get your products to you as quickly and as cost effectively as possible.
As with everything automatic, sometimes it might not present you with the best value price, please feel free to contact our helpful team who will endeavour to provide you with our best price for shipping to your address.
UK Standard Delivery
Please use the checkout process to get an accurate shipping quote for your cart, all of our rates are automatically calculated based upon your selections.
As with everything automatic, sometimes it might not present you with the best value price, please feel free to contact our helpful team who will endeavour to provide you with our best price for shipping to your address.
International Delivery
International Delivery is calculated based on a series of complex formulae at checkout and includes options such as UPS International. If you cannot see a rate at checkout, please contact us.
Delivery further information
The delivery charge is automatically added to your order and you will see the total amount you have to pay before you confirm the order. Unfortunately we have to charge carriage but we do attempt to keep it to a minimum where possible
All orders leaving us require a signature, and the delivery could take place any time between 8am and 6pm depending on the courier used. If you are liable to be out, please give an alternative delivery address or type instructions into the notes section as you place your order.
Standard Service; We will aim to dispatch goods within 3 working days. Delivery on the standard service is via courier, will require a signature and we aim to deliver within 5 working days. This service will only arrive on working days.
Courier delivery; The majority of our parcels will be sent via a courier, the bulk of which are with APC Streetwise. Please be aware that they advertise their delivery times as anywhere between 8am - 6pm Monday to Friday. We are not able to dictate to them a time slot. And in most cases a signature will be required.
New! For 2020 – Putney EmbankmentClick & Collect service; New for 2020 finds our first ever collection point on the Putney Embankment. Please select Pick Up at checkout to activate the service
NB; For orders to mainland Europe and Rest of World, the cost for carriage is calculated on order package weight and final destination. The price given at checkout is a guide only and an accurate postage cost will be calculated and invoiced to you if a supplement is required. If you would like to know this figure before despatch please feel free to contact us for a quote. Please be advised that if your order is sent via courier outside of the EU you may need to pay for import/custom taxes after the order has been delivered to you. This is standard procedure by the courier to ensure that your order is delivered to you as soon as possible and not delayed in customs. These charges are solely dependent on your local customs office and the courier, we have no control over these charges. We would kindly suggest contacting your local customs office for more information and advice. Additional charges for customs clearance must be borne by you; unfortunately, we have no control over these charges and cannot predict what they may be. We are unable to reimburse any costs incurred regardless of the circumstances.
ANTIFOUL & PAINT ORDERS; Please be aware that we can only send antifoul & Paint products within GB Mainland. We CANNOT send antifoul & paint outside of GB Mainland. If you have any questions regarding this please feel free to contact our Mail order department.
LIFEJACKETS & CO2 CANNISTERS; Please be aware that we cannot currently send lifejackets with CO2 cannisters included outside of GB Mainland
LIQUIDS & CHEMICALS; Please note we are unable to deliver liquids or chemicals overseas or to highlands and island addresses. We will also have to use a courier service within GB Mainland for liquids or chemicals.
SALE OF KNIVES; In accordance with UK Law (The Offensive Weapons Act 1996), we are unable to sell knives to anyone under 18 years of age. We are unable to send knives to overseas destinations. You must upload a copy of a valid identity document to your order at time of ordering or your order will be cancelled. Knives must be sent on a signature courier service. Valid forms of ID are EU Passports, EU Photocard Driving Licence, MOD Form 90 ID Card, EU Member State National Identity Card, “PASS” ID Cards.
Last Updated 2nd September 2020
Our returns policy on items shipped within the UK is as follows:
To qualify for a refund you have 14 days from receipt of your order to notify us that you wish to cancel the order and return the goods. You then have 14 days to return the goods to us at your own expense. If you fail to notify us of your desire to cancel the order and return the goods within 14 days of receipt you are not entitled to a refund. If you do not return the goods to us within 14 days after notification you are not entitled to a refund.
Your items should be unused and in the same condition as received. They should also be in the original packaging.
To complete your return, we require a receipt or proof of purchase.
Please do not send your purchase back to the manufacturer.
If goods are faulty or damaged on receipt we will ask for photographic evidence of the fault or damage where feasible.
To read our full returns and exchanges policy, please click here.
Overseas orders may be refunded if the item is returned but we cannot refund the cost of shipping.