Solarika.co.uk
250A 12V/24V/48V Automatic over-current DC circuit breaker
Art: CB250
Description
Photonic Universe ▶ DC Protection
250A Automatic Over-Current DC Circuit Breaker
Resettable Thermal Protection | 12V/24V/48V Systems | IP67 Rated
The Photonic Universe 250A Automatic Over-Current DC Circuit Breaker (SKU: CB250) provides essential over-current protection for a wide range of DC electrical systems. Functioning as a resettable fuse, this thermal protection device is designed to safeguard your equipment from high power draw, short-circuits, wiring errors, and other high current events. Its automatic operation and manual reset capability offer a convenient and reliable alternative to traditional fuses, eliminating the need for replacement after a fault trip.
Engineered for durability, this circuit breaker is constructed from robust thermal plastic with a UL94V-0 flammability rating, ensuring it can withstand high temperatures. It also boasts an IP67 rating for water resistance and is ignition-protected, meeting international standards S.A.E. J1625, J1171, and UL1500. This makes it suitable for demanding environments, including off-grid solar installations, automotive, and marine applications.
SYSTEM COMPATIBILITY: Designed for automatic over-current protection in 12V, 24V, and 48V DC systems.
Key Features
| ▶ Resettable Design — Eliminates the need for fuse replacement after an over-current event. |
| ▶ Wide Voltage Range — Compatible with 12V, 24V, and 48V DC systems for versatile use. |
| ▶ High Current Rating — Provides 250A over-current protection for robust system safeguarding. |
| ▶ Durable Construction — Made from UL94V-0 rated thermal plastic for high-temperature resistance. |
| ▶ IP67 Waterproof — Offers complete protection against dust and temporary immersion in water. |
| ▶ Ignition Protected — Meets S.A.E. J1625, J1171, and UL1500 standards for safety in hazardous environments. |
Technical Specifications
| Parameter | Value |
|---|---|
| Rating | 250A |
| Voltage Compatibility | 12V / 24V / 48V DC |
| Type | Thermal Overcurrent Protection |
| Material | Thermal Plastic (UL94V-0 Rated) |
| Operating Temperature | -32°C to 82°C |
| Storage Temperature | -34°C to 149°C |
| Terminals Size | M10 |
| Enclosure / Waterproof Rating | IP67 |
| Dimensions (L x W x H) | 86 x 48 x 37 mm |
| Weight | 138g |
| International Standards | S.A.E. J1625, J1171, UL1500 |
Typical Applications
| Application | Description |
|---|---|
| Off-Grid Solar Systems | Ideal for placement between off-grid inverter DC inputs and battery banks to protect against over-currents. |
| DC Power Distribution | Suitable for protecting DC power distribution boards and charging circuits in various setups. |
| Automotive & Marine | Provides reliable over-current protection in demanding automotive and marine DC electrical systems. |
Built-In Protection Functions
This Photonic Universe DC circuit breaker is designed with multiple safety features to ensure reliable operation and system protection. It offers thermal overcurrent protection, automatically tripping to prevent damage from excessive current. The unit is ignition protected, meeting S.A.E. J1625, J1171, and UL1500 standards, making it safe for use in environments where flammable vapours may be present, such as marine engine compartments. Furthermore, its IP67 rating ensures it is dust-tight and protected against temporary water immersion, enhancing its durability in harsh conditions.
Common Questions
What does "resettable fuse" mean?
A resettable fuse, like this circuit breaker, automatically trips or opens the circuit when an over-current is detected. Unlike traditional fuses which blow and require replacement, this device can be manually reset after the fault is cleared, allowing it to be used again.
What is an IP67 rating?
An IP67 rating indicates that the enclosure provides complete protection against dust ingress (the '6') and protection against the effects of temporary immersion in water up to 1 metre for 30 minutes (the '7').
Can this circuit breaker be used with any DC voltage?
This particular circuit breaker is designed for use with 12V, 24V, and 48V DC systems. Always ensure the voltage of your system matches the specifications of the circuit breaker to ensure proper operation and safety.
What does "ignition protected" mean?
Ignition protection, certified by standards like S.A.E. J1625, J1171, and UL1500, means the device is designed to prevent the ignition of flammable gases or vapours in its operating environment. This is crucial for safety in applications such as marine engine compartments.
Installation Notes
- This circuit breaker is designed for surface mounting.
- Ensure correct polarity when connecting to your DC system.
- Always disconnect power before installing or servicing any electrical components.
- Consult a qualified electrician or refer to relevant wiring diagrams for complex installations.
Before You Buy
- Verify the 250A rating is appropriate for your specific DC circuit and load.
- Confirm compatibility with your system's voltage (12V, 24V, or 48V DC).
- Consider the physical dimensions (86 x 48 x 37 mm) for your intended mounting location.
- Ensure you have the necessary M10 terminals and cabling for connection.
Please verify all specifications and compatibility requirements for your specific application before purchase. Product details are based on manufacturer specifications and verified information.
Have a question?
Testimonials
Product recommendations