YZQPNB Battery Disconnect Switch — Panel-Mount Negative Cut-Off with Lockout Plate, 500A 12–36V

YZQPNB Battery Disconnect Switch with lockout plate is a heavy-duty, panel-mount negative battery cut-off that isolates 12V–36V systems and secures power with a twist-to-lock knob.

This compact switch is built for vehicles and marine craft that need a reliable way to shut down battery feed for storage, maintenance, or theft-prevention. It combines a high continuous current rating, instant short-current tolerance, and a lockable panel knob so you can quickly disconnect the negative battery cable while keeping the control protected against accidental operation.

How does this switch protect my vehicle’s battery during storage?

Turning the knob to the off position physically severs the negative connection, preventing parasitic drain from accessories and extending battery life in long-term storage. The sealed design also helps minimize corrosion that can cause leaks or poor contact over time.

• Disconnects negative cable to stop parasitic drain
• Sealed, waterproof housing reduces corrosion risk
• Die-cast handle provides durable, repeatable operation

Will it handle the electrical load of my car, boat, or RV?

The switch is engineered for heavy-duty use with a 500A continuous rating and the capacity to tolerate very high instantaneous currents, making it suitable for starting loads and demanding accessories. It supports common system voltages so it fits a wide range of vehicles and craft.

• Working voltages: 12V, 24V, 36V
• Rated continuous current: 500A; instantaneous tolerance: 5000A
• Two 10 mm threaded studs with nuts accept standard negative battery cables

How is the switch mounted and secured to prevent accidental use?

The front-mounted knob installs through a panel and can be locked into place to avoid unintended switching. A provided lockout mounting plate lets you secure the control with a padlock or similar device for maintenance or anti-tamper purposes.

• Panel-mount knob locks on the panel for safety
• Includes lockout plate for padlock-style security
• Heavy-duty fixed die-cast handle resists bending or breakage

What materials and features improve reliability in harsh environments?

Conductive components use silver-plated copper for lower resistance and improved conductivity. The overall assembly is designed to be sealed and waterproof, and the robust hardware helps maintain good electrical contact even under vibration and wet conditions.

• Silver-plated copper connection material reduces voltage drop
• Sealed, waterproof construction for marine and outdoor use
• Includes nuts and studs sized for secure cable attachment

Who is this for? Technicians, boat owners, RV enthusiasts, truck fleets, and DIY mechanics who need a dependable way to isolate battery power will value this switch. It’s suited to anyone who wants a high-current negative cut-off with a lockable panel control for storage, maintenance, theft deterrence, or emergency shutoff. If you have specific fit or wiring questions, contact the seller for confirmatory guidance before installation.