Product Overview
Allen Bradley 1489-M1C040 Series D 1-Pole 4A Circuit Breaker
Condition
New, unused old stock. The photographed unit is representative of the two units in stock, showing a clean white housing, blue toggle actuator, and legible factory labels with no handling wear. It ships without its original manufacturer packaging.
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Product Overview
The Allen Bradley (Rockwell Automation) 1489-M1C040 is a Series D, 1-pole miniature circuit breaker with a C trip curve rated 4A. The unit's labels confirm UL489 and CSA C22.2 No. 5 listing (UL file E197878), a voltage rating up to 277V AC (also rated 48V DC and 230V per IEC 60947-2) at 50/60Hz, a 10kA interrupting rating with Icu of 15kA and Ics of 11.25kA, and current-limiting performance of 80kA squared-seconds at 60Hz with a 9.5kA peak. It carries a 40C HACR and SWD rating and is built for use per IEC 60947-2. The terminals accept 1 wire from 18-4 AWG or 2 to 4 wires from 18-10 AWG (maximum 2 wires per slot), with torque specs of 13.3 in-lbs for 18-16 AWG, 17.7 in-lbs for 14-10 AWG, and 39.8 in-lbs for 8-4 AWG. The label marks it as a product of Bulgaria, and the housing includes an integrated spring clip for standard DIN rail mounting.
Key Features
- 1-pole, C-curve circuit breaker rated 4A
- UL489 / CSA C22.2 No. 5 listed (UL file E197878)
- Rated up to 277V AC, 50/60Hz (48V DC, 230V per IEC 60947-2)
- 10kA interrupting rating, Icu 15kA / Ics 11.25kA
- Current limiting to 80kA squared-seconds at 60Hz, 9.5kA peak
- Accepts 1 wire 18-4 AWG or 2-4 wires 18-10 AWG, DIN rail spring-clip mount
- Manufactured in Bulgaria
Applications
- Panel builders adding compact 1-pole, 4A branch protection to a new control cabinet build
- Maintenance techs replacing a missing or failed 1489-M1C040 in an existing Allen Bradley panel
- OEM machine builders standardizing low-current control circuits on Allen Bradley 1489-M breakers
- Electrical techs stocking a spare 4A DIN-rail breaker for HACR/SWD-rated equipment
Frequently Asked Questions
Is this circuit breaker new?
Yes. It is new, unused old stock. The photographed unit shows clean, legible labels with no handling wear, though it does not include its original manufacturer packaging.
What wire sizes does the 1489-M1C040 accept?
Per the unit's own label, it accepts 1 wire from 18-4 AWG, or 2 to 4 wires from 18-10 AWG with a maximum of 2 wires per slot. Torque specs are printed on the housing for each wire range.
Will this mount to a standard DIN rail?
Yes. The housing includes an integrated spring clip built for standard DIN rail mounting, visible on the back of the unit in our photos.
Why buy this breaker here instead of a bulk lot?
You get one 1489-M1C040 from our stocked pair, with detailed photos of a representative unit so you can check the model, series, and label specs before you buy, not a mixed pallet of unknown-condition breakers. Shipping on this one is free - it clears our $28 free-shipping threshold on its own - and orders leave our Idaho warehouse the same or next business day.
Four amps is a small number, but it is the exact number a control circuit or instrument panel calls for when overkill is not the goal. Snap this Bulgarian-built Allen Bradley breaker onto the rail and let it do its quiet job in whatever panel comes next.
