OVERVIEW

Official designation: Allen-Bradley 1492-SP1C040 (Bulletin 1492-SP, Miniature Circuit Breaker)

Role/Application: A single-pole thermal-magnetic supplementary protector designed for overcurrent protection of inductive loads, featuring a 4 Amp continuous current rating and C-trip curve characteristics.

KEY SPECS SUMMARY

Power: 240 to 415 V AC / 48 V DC

Interfaces / Ports: Screw terminals, #16 to #4 AWG wire

Indicators: Toggle switch with indicator window (Red ON, Green OFF)

Operating Temp: 0 to 40 degrees C

Platform / Compatibility: DIN Rail mount, accepts side-mount accessories

Limit: 10 kiloamperes at 277 V AC Interrupting Capacity

Lifecycle: Discontinued since 04/30/2014

FREQUENTLY ASKED QUESTIONS

Technical Specifications:

Q: What is the trip mechanism and characteristic type of the 1492-SP1C040 breaker?

A: The trip mechanism is thermal-magnetic with a Type C trip curve for inductive loads.

Wiring & Installation:

Q: What is the recommended tightening torque for the line and load screw terminals?

A: The recommended tightening torque is 2.4 Newton-meters.

Troubleshooting & Compatibility:

Q: What is the Ampere Interrupting Capacity (AIC) of this single-pole circuit breaker?

A: The AIC rating is 10 kiloamperes at 277 V AC, per UL and CSA standards.

Replacement & Upgrades:

Q: Is the 1492-SP1C040 still an active product line and is there an official replacement?

A: The 1492-SP1C040 is discontinued, with an apparent product line shift to the 1492-SPM series.