Stinger SGP901501 150 AMP Circuit Breaker

Stinger SGP901501 150 Amp Resettable Circuit Breaker for 0 Gauge and 4 Gauge Car Audio and Automotive Power Installations

The SGP901501 from Stinger is a 150 amp resettable circuit breaker from the SGP90 series, accepting 0 gauge (70mm²) or 4 gauge (25mm²) cable. Designed for car audio amplifier protection and general automotive accessory applications, it provides easy reset and disconnect capability without requiring fuse replacement after a trip event.

Product overview

The SGP90 series circuit breakers are designed for applications where the ability to easily set, reset, or defeat the circuit is preferred over a one-use fuse. The 150 amp rating suits high-powered car audio amplifier installations where transient music loads can swing significantly above and below the amplifier's rated full load current. In a typical audio application, a 150 amp amplifier may swing between 2 amps at low volume and 180 amps or more at peak, averaging around half the fuse rating during normal use. The SGP901501 allows normal transient swings to pass while tripping on sustained fault conditions that indicate a system problem.

The SGP90 series has predictable trip characteristics that can be forecast based on amperage load, duty cycle, and ambient temperature. For constant load applications such as inverters and other sustained high-current devices, the breaker capacity will decline in relation to the time and size of the load, and this should be considered during system design. The easy reset and disconnect function allows the breaker to be manually tripped for safe system isolation during installation or servicing.

Features and benefits

150 amp rating for high-powered car audio installations: The 150 amp rating suits high-powered amplifier circuits where transient music loads swing significantly above and below the rated full load current, providing protection against sustained fault conditions without nuisance tripping during normal operation.

Easy reset and disconnect: Resettable design eliminates the need for fuse replacement after a trip event. The circuit can also be manually tripped for safe system isolation during installation or servicing.

Accepts 0 gauge and 4 gauge cable: Compatible with 0 gauge (70mm²) and 4 gauge (25mm²) cable, covering a range of high-powered car audio and accessory power installation configurations.

Predictable trip characteristics: The SGP90 series provides predictable trip behaviour based on amperage load, duty cycle, and ambient temperature, allowing the breaker to be selected and applied with confidence for specific installation requirements.

Suited to car audio and accessory applications: Designed for car audio amplifier circuit protection as well as general automotive accessory applications where resettable circuit protection is preferred over a one-use fuse.

Technical specs

Frequently asked questions

What is the advantage of a circuit breaker over a fuse for car audio installations?
A circuit breaker can be reset after a trip event without requiring fuse replacement, making it more practical for installations where occasional overload conditions may occur, such as high-powered audio systems driven hard. It can also be manually tripped for safe system isolation during installation or servicing, which a fuse does not allow.

How does the SGP901501 handle the transient load swings in a car audio system?
Music-driven amplifier loads swing significantly between minimum and maximum current draw. The SGP90 series is designed to allow these transient peaks to pass during normal operation while tripping on sustained fault conditions that indicate a genuine system problem. For a 150 amp rated amplifier, transient peaks may reach 180 amps or more during hard driving, but the average load during typical listening will be well within the breaker's capacity.

Can the SGP901501 be used for constant load applications such as inverters?
The SGP90 series can be used for constant load applications, however the breaker capacity declines in relation to the time and size of the sustained load. This should be factored into system design for inverters and other constant high-current devices. Contact us for guidance on selecting the correct breaker rating for your specific constant load application.

What cable gauges does the SGP901501 accept?
The SGP901501 accepts 0 gauge (70mm²) and 4 gauge (25mm²) cable, covering the most common large gauge cable sizes used in high-powered car audio and accessory power installations.

Is the SGP901501 suitable for both positive and negative circuit protection?
Circuit breakers are typically installed in the positive power cable run close to the battery for circuit protection. Contact us if you need guidance on correct installation positioning for the SGP901501 in your specific system configuration.