Catalogs > Industrial Controls Catalog > Control Circuit and Load Protection > Miniature Circuit Breakers / Supplemental Protectors > Supplementary Protector / Miniature Circuit Breaker
Supplementary Protector / Miniature Circuit Breaker
| Introduction |  |
Standards Compliance | |
Product Selection | |
Accessories | |
Specifications | |
Approximate Dimensions | |
| Product Overview |
Bulletin 1492-SP — Supplementary Protector/Miniature Circuit Breaker
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- Energy limiting design — protects downstream components better than conventional breakers during short circuits
- Field-mountable options for selective applications
- True IP2X finger-safe design (front)
- International approvals — CE Marked, and meets UL, CSA, and IEC (VDE, GL) standards for worldwide acceptance
- Ratings to 480Y/277V AC @ 240/415V AC — 10 000 A interrupt rating
- AC and DC voltage ratings — in one convenient device
- A positively trip-free mechanism (breaker operation cannot be defeated by holding the handle in the ON position)
- 3 trip curves: B, C, and D
- Time delay (D characteristic) for high inrush currents during inductive start-ups such as transformers and power supplies
- Superior shock and vibration resistance capabilities — helps to prevent nuisance tripping
Bulletin 1492-SP series C devices are energy limiting, thermal magnetic type overcurrent protectors meeting UL 1077/CSA C22.2 No. 235, IEC/EN 60898. These devices are designed for the protection of a wide variety of products including:
- Solenoids
- Transformers
- Test equipment
- Automotive systems
- Controller I/O points
- Power supplies
- Relay and contractor coils
- Medical equipment
- Computers
- Control instrumentation
The Bulletin 1492-SP supplementary protectors/miniature circuit breakers are available in one-, one-pole plus neutral, two-, three-, and three-pole plus neutral units. One- and two-pole AC units also have limited DC ratings. Two- and three pole units are connected at the handle for simultaneous operation. Screw termination is standard on all Bulletin 1492-SP units. Both line and load side terminals accept #18...4 AWG (1.0.. 25 mm2) copper wire.
Ordering Information
To order the proper device, you need to know the:
• Maximum rated current of equipment to be protected
• Sytem phase of 1-, 2-, or 3
• Maximum startup (inrush) current
• Accessories that are required
Use the product selection tables on the following pages to determine the catalog number.
1. Select a 1-, 2-, or 3-pole device.
2. If needed, select the Switched Neutral Module. The Switched Neutral Module is mounted on the right side of the breaker. This module must be mounted at the factory. It cannot be installed in the field.
3. If applicable, consider the derating factors listed in the Determining Ratings section of Publication 1492-TD010*
4. Order accessory contacts or modules as separate items. Accessory modules are always mounted on the left side of the supplemental protector/miniature circuit breaker. A maximum of two accessory modules can be mounted on a single device.
Refer to the Accessories table on Accessories for possible combinations.
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