Morningstar EcoPulse Solar Charge Controller 30A for 12 & 24V Systems – PWM – 4 Stage Charging – Low Battery Protection (SR-EC-30)

Circuit Protection (Circuit Breakers and Fuses)

*Excerpt from Blue Sea Systems https://www.bluesea.com/support/articles/Circuit_Protection/98/DC_Circuit_Protection

Choosing an Amperage Rating – Generally, circuit protection devices are installed to protect the wiring from overheating during overloads or faults. The simplest approach for selecting a circuit protection device rating is to choose an amperage rating that is equal to or less than the current rating, ampacity of the wire. If the wire ampacity is significantly greater than the load current, as might be with small loads or with wiring of increased size to reduce voltage drop, then a range of circuit protection values between the load requirement and the wire ampacity may be acceptable. Larger ampacity values reduce the probability of nuisance failures and reduce fuse heating; smaller ampacity values provide more conservative protection for the wiring.

In some cases, a product manufacturer may recommend that a specific fuse or circuit breaker size should be used with the product. If that is the case, the wire to the product should be selected so that the wire ampacity exceeds the recommended rating, which will protect both the product and the wiring.

We recommend Enerdrive waterproof surface mount re-settable circuit breakers for performance and value;

• 25A Surface Mount Resettable Waterproof Circuit Breaker
• 30A Surface Mount Resettable Waterproof Circuit Breaker
• 40A Surface Mount Resettable Waterproof Circuit Breaker
• 50A Surface Mount Resettable Waterproof Circuit Breaker
• 60A Surface Mount Resettable Waterproof Circuit Breaker
• 70A Surface Mount Resettable Waterproof Circuit Breaker
• 80A Surface Mount Resettable Waterproof Circuit Breaker
• 100A Surface Mount Resettable Waterproof Circuit Breaker
• 120A Surface Mount Resettable Waterproof Circuit Breaker