Description
Blue Sea 7440 UL-489 Circuit Breaker 5A | Boat Supply Store
For marine applications demanding uncompromising safety and adherence to stringent regulatory standards, the Blue Sea 7440 UL-489 Circuit Breaker provides certified protection. This 5A DC breaker operates on a 80V DC maximum voltage system and features a robust magnetic hydraulic tripping mechanism for reliable fault interruption. Its UL-489 listing signifies its suitability for critical systems aboard Navy, Army, and Coast Guard vessels, ensuring dependable operation in demanding maritime environments.
Key Features
- Certified UL-489 Listed for critical marine applications
- Precisely Rated 5A DC amperage for sensitive circuits
- Ergonomic Flat Rocker actuator for intuitive operation
- High Voltage 80V DC Maximum Voltage capability
- Reliable Magnetic Hydraulic - Trip Free operation
- Robust 10000A Interrupt Capacity for fault handling
- Durable Tin-Plated Brass #10-32 Screw Terminals
- Single Pole configuration for dedicated circuit protection
Specifications
| Product Specifications | |
|---|---|
| Brand | Blue Sea Systems |
| Amperage Rating | 5A DC |
| Maximum Voltage | 80V DC |
| Actuator Type | Flat Rocker |
| Poles | 1 |
| Circuit Breaker Type | Magnetic Hydraulic - Trip Free |
| Terminal Type | #10-32 Screw Tin-Plated Brass |
| Interrupt Capacity | 10000A |
Who This Is For
Ideal for marine professionals and boat owners on Navy, Army, Coast Guard vessels, or any vessel requiring CFR 46 compliance for 5A DC circuits. This breaker is for users prioritizing certified safety and guaranteed reliability in critical electrical systems.
How It Compares
| Feature | Blue Sea 7440 UL-489 Circuit Breaker 5A | Blue Sea Systems 7441 UL |
|---|---|---|
| Amperage | 5A DC | 10A DC, 5A |
| Maximum Voltage | 80V DC | 80V DC, 28V DC |
| Circuit Breaker Type | Magnetic Hydraulic - Trip Free | Magnetic Hydraulic - Trip Free, Thermal |
| UL-489 Certification | Yes | Yes, No |
| Interrupt Capacity | 10000A | 10000A, null |
Common Concerns Answered
Are there any common issues reported with the Blue Sea 7440 circuit breaker?
While no specific documented complaints exist for the Blue Sea 7440, general circuit breaker issues can stem from incorrect sizing for the intended application or improper installation. The price point is occasionally noted, but typically justified by the superior UL-489 certification and build quality inherent in Blue Sea Systems products.
Why is UL-489 certification important for marine circuit breakers?
UL-489 certification signifies that a circuit breaker has undergone rigorous testing and meets stringent safety and performance standards specifically for use in demanding electrical environments, such as marine applications where reliable protection is paramount.
How does the magnetic hydraulic tripping mechanism benefit a boater?
The magnetic hydraulic tripping mechanism provides consistent and reliable overcurrent protection. It utilizes both magnetic forces for rapid short-circuit response and hydraulic dampening for smooth operation across a wide range of temperatures, ensuring predictable tripping characteristics critical for safeguarding sensitive marine electronics.
Frequently Asked Questions
What is the interrupt capacity of the Blue Sea 7440 circuit breaker?
The Blue Sea 7440 UL-489 Circuit Breaker has an interrupt capacity of 10000A.
What type of actuator does the Blue Sea 7440 circuit breaker have?
The Blue Sea 7440 circuit breaker features a Flat Rocker actuator style.
What is the maximum DC voltage rating for the Blue Sea 7440 circuit breaker?
The maximum DC voltage rating for the Blue Sea 7440 circuit breaker is 80V DC.
What terminal type does the Blue Sea 7440 circuit breaker use?
The Blue Sea 7440 circuit breaker uses #10-32 Screw Tin-Plated Brass terminals.
Why are UL-489 specifications important for marine circuit breakers?
UL-489 specifications are critical for marine circuit breakers as they ensure the device meets rigorous safety and performance standards for use in the harsh and safety-critical marine environment, protecting vessels and crew from electrical hazards.
