Battery Isolation & Selection for Vehicle Power Systems
Battery Disconnect & Selector Switches
DAIER supplies manual and wireless remote battery disconnect switches, dual-battery selectors and voltage-sensitive isolators for automotive, marine and RV power assemblies. Choose from panel-mounted and direct battery-post designs, with battery clamps, adapters, cable lugs and terminal covers available in the same range.
- Control Options Manual & Wireless Remote
- Battery Functions ON-OFF & 1-2-BOTH-OFF
- DC Voltage Options 12V/24V & 12–48V DC Versions
- Installation Options Panel, Top Post & Side Post
Battery Switches & Related Accessories
RL-RCM300-POS 12V-24V 300A Positiv Remote Battery Disconnect Switch
- Rating : 12V/24V (300A Cont. / 1000A Crank)
- Mounting : Positive Post (Negative Sensing)
- Smart Tech : <11.8V/23V Cutoff | >13.2V/25V Lock
RL-240A-RCM2 12V/24V 240A Automatic Disconnect ON-OFF Remote Control Battery Disconnect Switch
This 12V 240A remote control battery disconnect switch with a standby power consumption of just 3mA employs an innovative magnetic latching relay for efficient circuit disconnection.
RL-240A-RCM3-VD 12V/24V 240A ON-OFF Remote Control Battery Switch with LED Voltage Display
This 12V/24V remote control battery switch with LED voltage display supports a high 500A instantaneous current, and allows convenient wireless ON/OFF control.
RL-240A-RCM4 240A 12V/24V Side Mount Remote Battery Disconnect Switch with 1000A CCA
This 12V/24V side mount remote battery disconnect switch delivers a robust 240A rated current and impressive 1000A Cold Cranking Amps capability, providing convenient wireless control for vehicle power systems.
RL-240A-RCM5 240A 12V/24V Recessed Post Remote Battery Disconnect Switch with 1000A CCA
This 12V/24V recessed post remote battery disconnect switch offers a 240A continuous current rating and 1000A Cold Cranking Amps
RL-240A-RC 12V 240A Remote Battery Disconnect Switch with LED Voltmeter
This remote battery disconnect switch features a high rating of 240A at 12V DC, ensuring exceptional reliability even in demanding conditions.
ASW-A401 12V 40A Voltage Sensitive Relay VSR Double Smart Battery Isolator
The 12V 40A dual smart battery isolator with an advanced Voltage Sensitive Relay (VSR) activates at 13.3 volts and deactivates at 12.8 volts.
ASW-A401M-1 Manual/Auto VSR Smart Dual Battery Isolator with Voltmeter
The 12V 40A VSR smart dual battery isolator with a voltmeter features manual and automatic control modes, allowing you to seamlessly connect and disconnect the circuit as needed.
ASW-A71001 275A 12-48VDC ON-OFF Side Post Battery Master Disconnect Switch
The 275A side post battery master disconnect switch is designed for demanding applications and can reliably handle 12-48V systems (up to 1250A cranking) with direct terminal mounting and copper contacts.
ASW-A71002 250A 12-48VDC 2 Positions ON-OFF Top Post Battery Disconnect Switch
This 250A 12-48VDC top post battery disconnect switch offers high current capacity, flame-resistant construction, copper terminals for enhanced conductivity and is easily installed on standard top-post batteries.
ASW-C71001 300A 12-48V DC Negative Side Post Battery Disconnect Switch In-Line Master Power Cutoff for Car, Marine, RV
This negative side post battery disconnect switch is for 12-48V DC systems, rated for 300A, and connects to the negative terminal to prevent battery drain and enhance safety.
ASW-C71002 300A 12-48V DC Positive Top Post Battery Disconnect Switch Master Power Cutoff for Car, Marine, RV with Adjustable Clamp
This positive top post battery disconnect switch is for positive top-post batteries measuring 17-19mm, with a 300A capacity suitable for 12V to 48V systems and features an adjustable clamp for flexible installation.
ASW-C71003 300A 12-48V DC Negative Top Post Battery Disconnect Switch Isolator with M8 Stud & Rotary Knob
This 300A 12-48VDC negative top post battery disconnect switch features solid brass terminals, an adjustable clamp, and a secondary M8 stud for flexible installation.
ASW-D71001 250A DC 5-60V Side Post Battery Disconnect Switch with Digital Voltage Display
This 250A side post battery disconnect switch is designed for 5-60V DC systems, features an integrated real-time LED voltmeter and offers dual installation options for both tapered and threaded side post batteries.
ASW-D71002 250A 5-60V DC Top Post Master Battery Disconnect Switch with Voltmeter
This top post master battery disconnect switch with an integrated digital voltmeter (5-60V range) is rated for 250A continuous current and features copper terminals for superior conductivity.
ASW-A701 ON-OFF Contour Master Battery Switch Marine
The battery switch marine is rated for 275A continuous current at 12V DC, and 1250A intermittent current at 48V DC, ON-OFF.
ASW-A701-KIT1 275A 12-48VDC ON-OFF Battery Switch with Mounting Brackets for Battery Positive
This ON-OFF battery disconnect switch handles up to 275A continuous current and is suitable for use on the positive battery terminal of 12-48V DC systems.
ASW-A701S 12V-48V 200A 1-2-Both-OFF Heavy Duty Battery Isolator Switch
The heavy duty battery isolator switch features a versatile 1-2-Both-OFF 4 Position design with a rating of 200A DC Continuous, 275A DC Intermittent, and 1000A DC Cranking.
ASW-A720 Master RV Battery Disconnect Switch
ASW-A720 Master RV Battery Disconnect Switch is rated for 600A continuous current and 2500A intermittent current in 12-48V DC, ON-OFF.
ASW-A720S Heavy Duty 600A 12V-48V 4 Positions 1-2-Both-OFF Dual Battery Switch
The heavy duty dual battery switch is rated for 600A continuous current and 2500A intermittent current in 12-48V DC, 1-2-Both-OFF.
Selection Guide
Compare Battery Switch Functions, Ratings & Installation
DAIER offers manual battery disconnects, wireless remote cutoffs and selectors for single- and dual-battery systems. Rotary knobs, removable keys, push-pull handles and knife-blade designs provide different ways to operate the circuit. Voltage-sensitive isolators automatically link or separate two batteries according to their switching thresholds.
Control Function
Use an ON-OFF disconnect to isolate one battery circuit. A 1-2-BOTH-OFF selector provides a choice of battery banks. Wireless remote versions allow operation without reaching the switch; voltage display and automatic cutoff are available on specific versions.
DC Voltage & Current
The range includes 12V/24V remote switches and manual versions for 12–48V DC systems, with other voltage options on individual models. Compare the continuous rating for sustained loads and the separate intermittent or cranking rating for short-duration loads. Use the voltage and duty conditions stated for each product.
Mounting & Connections
Choose panel or surface mounting, or a direct top-post or side-post connection. Compare positive or negative installation, clamp dimensions, stud threads and cable access. Mounting brackets and sensing leads are included with particular assemblies.
Battery Connection Accessories
Clamps, post adapters, copper cable lugs and insulating terminal covers support the battery connection. Match these parts by cable size, terminal fit and dimensions; they serve a different purpose from the disconnect switch or battery selector.
Applications
Typical DC Applications
Battery switches support power isolation and battery-bank selection in vehicle and equipment assemblies.
Automotive & Service Vehicles
Provide accessible battery isolation for parked vehicles and maintenance. Manual handles and wireless remote controls suit different installation positions.
Marine & RV Systems
Use an ON-OFF switch for a single battery circuit or a selector for two battery banks. VSR units provide voltage-controlled battery linking.
Equipment & OEM Assemblies
Match panel controls, battery-post connections, cable lugs and terminal covers to repeatable power layouts in machinery and vehicle assemblies.
Common Questions
Battery Switch FAQs
Answers about battery isolation, selection, ratings and installation.
For a Project Enquiry
Send a part number and quantity, or an installation drawing for model selection.
Send Project DetailsAn ON-OFF disconnect controls one battery circuit. A 1-2-BOTH-OFF selector chooses between two battery banks or connects both. A voltage-sensitive relay links and separates batteries at its specified voltage thresholds. Choose the function and wiring diagram for the system.
Use the continuous current rating for sustained loads. Intermittent and cranking ratings apply to shorter duty periods, which vary by model. Confirm the rating at the intended DC voltage together with the duration and load requirements; a peak value is not the continuous capacity.
Panel-mounted versions connect through cable lugs and terminal studs. Direct-post versions fit a top or side battery post and may be intended for positive or negative installation. Compare the drawing, clamp dimensions, stud threads and space for the cables.
Wireless ON-OFF operation is available across the remote range. Some versions also provide a voltage display, low-voltage cutoff or remote lockout while charging. Select the feature set and operating voltage shown for the specific version.
Send the part number and quantity. For help choosing a switch, add the system voltage, load and preferred control or mounting arrangement. For connection accessories, include the cable size and terminal dimensions.
Engineering Consulting & Custom Quotes
Submit drawings or specs for Battery Switch. Receive engineering feedback and quotes within 24 hours.