We ship to the Philippines — door-to-door, customs and logistics handled by 3G Electric

3G Electric
RFQ CartGet a QuoteSign inSign up
BATTERY DOCTOR In-Line Battery Disconnect Switch, Negative, 12V, 5000A - Battery Disconnect Switches
BATTERY DOCTORBattery Disconnect Switches

BATTERY DOCTOR In-Line Battery Disconnect Switch, Negative, 12V, 5000A

The BATTERY DOCTOR Battery Isolator Disconnect Switch (MPN 20257) is an in-line rotary disconnect switch with a negative polarity, rated for 12V maximum voltage and 5,000 A maximum surge current, featuring silver…

SKU 3G-OTH-497597

Brand
BATTERY DOCTOR
Item
In-Line Battery Disconnect Switch, Negative, 12V, 5000A
Category
Battery Disconnect Switches
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Local availability & support — the Philippines

Delivery
5–8 business days door-to-door; Bureau of Customs clearance typically 2–4 business days.
Payment
Invoicing in PHP or USD. Bank transfer and corporate PO accepted.
Ships to
Manila, Quezon City, Cebu, Davao, Batangas

Technical Specifications

BATTERY DOCTOR
Manufacturer Part Number
20257
Type
In-Line, Negative, 12V, 5,000 A
Polarity
Negative
Maximum Voltage
12V
Contact Material
Silver Plated Copper
Maximum Surge Current
5,000 A

Technical Documents

No technical documents available for this product.
Request documentation →
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

BATTERY DOCTOR Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The BATTERY DOCTOR Battery Isolator Disconnect Switch (MPN 20257) is an in-line rotary disconnect switch with a negative polarity, rated for 12V maximum voltage and 5,000 A maximum surge current, featuring silver plated copper contacts. 3G Electric interprets this demand and delivers this genuine industrial switch across 14 departments — and far more — with specialist depth in electrical controls as an authorised distributor.

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

Frequently Asked Questions

What is the BATTERY DOCTOR Battery Isolator Disconnect Switch used for?

This in-line rotary disconnect switch isolates the battery from the electrical system, preventing parasitic drain and enabling safe maintenance. It is used in heavy-duty vehicles, marine, and industrial equipment where a high surge current rating of 5,000 A is required.

What are the specifications of the BATTERY DOCTOR 20257 switch?

The BATTERY DOCTOR 20257 is a negative polarity, in-line rotary disconnect switch rated for 12V maximum voltage and 5,000 A maximum surge current. It features silver plated copper contacts for reliable conductivity and is designed for high-current applications.

Where to buy the BATTERY DOCTOR 20257 worldwide?

3G Electric supplies the BATTERY DOCTOR 20257 battery isolator switch to customers worldwide. We handle full logistics, customs clearance, and delivery, ensuring you receive the genuine industrial switch you need, regardless of your location.

How to install a BATTERY DOCTOR battery disconnect switch?

Installation typically involves disconnecting the battery, mounting the switch in-line with the negative cable, and securing connections with appropriate tools. Always follow the manufacturer's instructions and use proper personal protective equipment. For specific guidance, consult a qualified technician.

Used in

Common applications for BATTERY DOCTOR
Fleet maintenance — BATTERY DOCTOR 31200 Series circuit breakers for overcurrent protection in truck electrical systems
Automotive wiring harness repair — BATTERY DOCTOR GPT primary wires (20 AWG, 22 AWG) for replacing damaged low-voltage cables
Industrial control panels — BATTERY DOCTOR primary wires for internal wiring of 60 V control circuits
Marine battery systems — BATTERY DOCTOR circuit breakers for protecting DC circuits on boats
Off-road equipment — BATTERY DOCTOR 31200 Series breakers for resettable protection in ATVs and utility vehicles
Battery charger connections — BATTERY DOCTOR primary wires for extending charger leads in workshop environments

BATTERY DOCTOR Products

3G Electric supplies BATTERY DOCTOR battery disconnect switches. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion →Pumps & Compressors →Spare Parts →All Products →

More from BATTERY DOCTOR

View all BATTERY DOCTOR parts →
This top post knife blade battery disconnect switch is designed for 12V negative-ground systems. It features brass contacts and is suitable for disconnecting the battery in vehicles or equipment to prevent parasitic drain and enhance safety during storage or maintenance
BATTERY DOCTOR
This top post knife blade battery disconnect switch is designed for 12V negative-ground systems. It features brass contacts and is suitable for disconnecting the battery in vehicles or equipment to prevent parasitic drain and enhance safety during storage or maintenance
This knob-operated, in-line battery disconnect switch is designed for negative polarity 12V systems. It features copper contacts and is rated for 100 A continuous current with a 500 A surge capacity. Commonly used to prevent parasitic battery drain during storage or servicing in automotive, marine, and industrial equipment
BATTERY DOCTOR
This knob-operated, in-line battery disconnect switch is designed for negative polarity 12V systems. It features copper contacts and is rated for 100 A continuous current with a 500 A surge capacity. Commonly used to prevent parasitic battery drain during storage or servicing in automotive, marine, and industrial equipment
In-line rotary disconnect switch for negative-side battery disconnection. Rated for 12V and 300 A max current with copper contacts. Used to isolate battery power in vehicles or equipment to prevent parasitic drain, secure storage, or enable maintenance
BATTERY DOCTOR
In-line rotary disconnect switch for negative-side battery disconnection. Rated for 12V and 300 A max current with copper contacts. Used to isolate battery power in vehicles or equipment to prevent parasitic drain, secure storage, or enable maintenance
This in-line rotary disconnect switch isolates negative polarity 24V battery systems. Rated for 100 A continuous current with a 500 A surge capacity, it features copper contacts. Commonly used to prevent parasitic drain, enable maintenance, or serve as an emergency cutoff in vehicle and equipment electrical systems
BATTERY DOCTOR
This in-line rotary disconnect switch isolates negative polarity 24V battery systems. Rated for 100 A continuous current with a 500 A surge capacity, it features copper contacts. Commonly used to prevent parasitic drain, enable maintenance, or serve as an emergency cutoff in vehicle and equipment electrical systems
This in-line rotary disconnect switch isolates the battery from the electrical system to prevent parasitic drain and allow safe maintenance. Rated for 12V maximum voltage and 2500A maximum surge current, it features copper contacts. Suitable for use in vehicles, marine, and industrial equipment requiring a negative polarity disconnect
BATTERY DOCTOR
This in-line rotary disconnect switch isolates the battery from the electrical system to prevent parasitic drain and allow safe maintenance. Rated for 12V maximum voltage and 2500A maximum surge current, it features copper contacts. Suitable for use in vehicles, marine, and industrial equipment requiring a negative polarity disconnect
This top-post rotary disconnect switch is designed for negative polarity applications at 12V with a maximum surge current of 500 A. The zinc contacts provide electrical conductivity. Commonly used to isolate battery power for vehicle maintenance, storage, or safety, helping to prevent parasitic drain and reduce fire risk
BATTERY DOCTOR
This top-post rotary disconnect switch is designed for negative polarity applications at 12V with a maximum surge current of 500 A. The zinc contacts provide electrical conductivity. Commonly used to isolate battery power for vehicle maintenance, storage, or safety, helping to prevent parasitic drain and reduce fire risk
This in-line knife blade switch disconnects the battery from a 12V electrical system, preventing parasitic drain during storage or servicing. It is commonly used on vehicles, boats, and industrial equipment where a quick, manual battery isolation is needed. The switch features brass contacts and is rated for 12V maximum voltage
BATTERY DOCTOR
This in-line knife blade switch disconnects the battery from a 12V electrical system, preventing parasitic drain during storage or servicing. It is commonly used on vehicles, boats, and industrial equipment where a quick, manual battery isolation is needed. The switch features brass contacts and is rated for 12V maximum voltage
BATTERY DOCTOR Battery Disconnect Switch: In-Line Rotary, In-Line, Negative, 12V, 300 A Max Current (MPN 20387)
BATTERY DOCTOR
BATTERY DOCTOR Battery Disconnect Switch: In-Line Rotary, In-Line, Negative, 12V, 300 A Max Current (MPN 20387)