OVERVIEW

Official designation: Allen-Bradley 1492-SP1D020 (Bulletin 1492-SP, Supplementary Protector)

Role/Application: Single-pole thermal-magnetic supplementary protector rated 2 A with a D-trip curve, designed for overcurrent protection of highly inductive loads in auxiliary circuits.

KEY SPECS SUMMARY

Power: 277 V AC (UL), 240 V AC (IEC)

Interfaces / Ports: Dual terminals, screw termination

Indicators: Toggle position, Red ON/Green OFF window

Operating Temp: Minus 25 degrees C to 55 degrees C

Platform / Compatibility: DIN rail mounting, UL 1077, CSA, IEC 60947-2

Limit: 2 A Rated Current, D-trip curve

Lifecycle: Discontinued as of 04/30/2014.

FREQUENTLY ASKED QUESTIONS

Technical Specifications:

Q: What is the instantaneous magnetic trip range for a D-trip curve supplementary protector rated 2 A?

A: The D trip curve magnetic trip range is 10 to 20 times the 2 A rated current.

Wiring & Installation:

Q: What are the features of the terminals to ensure reliable wiring connections?

A: The unit features dual terminals that clamp the cable from both sides to improve connection reliability.

Troubleshooting & Compatibility:

Q: What optional accessories are compatible with the 1492-SP series devices?

A: Compatible accessories include auxiliary contacts, shunt trips, and undervoltage release modules.

Replacement & Upgrades:

Q: Is this discontinued 1492-SP1D020 protector superseded by a specific model in the 1492-SPM series?

A: Refer to the latest manufacturer manual for the exact current replacement part number and product selection guide.