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The Allen-Bradley 100-C09D10 is a Bulletin 100-C IEC contactor with a 9 A AC-3 frame, a DC coil, and a 1 N.O. built-in auxiliary contact. It is the part you reach for when a control circuit runs on a fixed DC voltage (typically 24 V DC, but other DC bands are available) and the load is a small motor, pump, fan, or heater up to 5 HP at 480 V.
Buyers often confuse the 100-C09D10 with the wide-range electronic-coil variant (100-C09EJ10), or with the 110/120 V AC-coil sibling (100-C09KD10). This page lays out the actual differences, the spec sheet, and the matching parts you need on the same panel.
Technical Specifications
| Parameter | Specification |
|---|---|
| Catalog number | 100-C09D10 |
| Series / family | Bulletin 100-C IEC contactor |
| Frame size | 9 A frame (C09) |
| Number of main poles | 3 N.O. |
| Rated operational current Ie (AC-3, 400 V) | 9 A |
| Rated operational current Ie (AC-1, 40 degC) | 25 A |
| AC-3 motor rating, 480 V | 5 HP / 4 kW |
| AC-3 motor rating, 240 V | 3 HP / 2.2 kW |
| AC-3 motor rating, 200 V | 2 HP / 1.5 kW |
| Coil interface | "D" - direct DC coil, fixed voltage band (specified by suffix; verify nameplate) |
| Auxiliary contacts (built-in) | 1 N.O. + 0 N.C. |
| Mechanical life | Approx. 10 million operations |
| Electrical life (AC-3) | Approx. 1 million operations |
| Mounting | 35 mm DIN rail or two-screw panel mount |
| Frame width | 45 mm |
| Approvals | UL, CSA, CE, CCC |
| Ambient temperature | -25 degC to +60 degC |
Important note on coil voltage: the "D" suffix in 100-C09D10 indicates a DC coil. Allen-Bradley historically distinguishes specific DC bands by additional digits in the full part number on the coil label. Always check the printed coil voltage on the device before energising, especially when the part has been pulled from a stocked spare.
Catalog Number Breakdown
| Segment | Meaning |
|---|---|
| 100-C | Bulletin 100-C IEC contactor |
| 09 | 9 A AC-3 frame |
| D | DC coil, fixed voltage |
| 10 | 1 N.O. + 0 N.C. auxiliary contact arrangement |
100-C09D10 vs Related Coil Variants
| Catalog | Coil type | Aux contacts | Best for |
|---|---|---|---|
| 100-C09D10 | DC, fixed voltage | 1 N.O. | Standard DC control circuit, single feedback |
| 100-C09EJ10 | DC, wide-range electronic | 1 N.O. | PLC-driven switching across a voltage band |
| 100-C09KD10 | 110/120 V AC | 1 N.O. | 120 V AC control, US-spec panels |
| 100-C09KN10 | 240 V AC | 1 N.O. | 240 V AC control circuits |
| 100-C09D01 | DC, fixed voltage | 1 N.C. | Interlock or fail-state feedback |
| 100-C09DJ10 | DC, wide-range with diode protection | 1 N.O. | DC circuits with built-in coil suppression |
If you cannot confirm the original coil voltage from the panel drawings, the wide-range electronic 100-C09EJ10 is often a safer drop-in for a future panel rebuild because it accepts a band of DC voltages.
Common Pairings and Compatible Components
- Solid-state overload relay: 193-EEEB / E1 Plus, sized to motor FLA.
- Auxiliary blocks: 100-FA front-mount or side-mount for additional N.O. / N.C. contacts.
- Surge suppressor: 100-FSD coil-mounted diode/RC suppressor recommended for DC coils switched by PLC outputs to protect the output transistor.
- Mechanical interlocks: 100-MCA when paired for reversing.
- Reversing wiring kit: 100-K reversing kits.
- DIN rail: 199-DR* 35 mm rail.
Common Use Cases
- 24 V DC control panels where the entire control voltage is DC for safety or remote-island operation.
- Battery-backed motor starters on solar, telecom, or rail applications.
- PLC-controlled small motor branches, with a transistor output driving the DC coil through a freewheel diode.
- Heater contactors in DC-controlled UL 508A panels.
- Service replacement when a 100-C09D coil burns out, typically from over-voltage on the control bus or coolant ingress.
Why Buy Your 100-C09D10 from Rabwellplc
The DC-coil 9 A contactor variants are not always carried in depth at general distributors, especially with verified coil bands. We stock 100-C09D10 alongside its EJ, KD, and KN siblings in the Allen-Bradley contactor and motor-control program, ready to ship from US inventory. If you are also replacing the upstream PowerFlex drive or matching overload, we can ship the full starter set on a single PO.
Check 100-C09D10 stock and pricing ->
Frequently Asked Questions
What is the coil voltage of a 100-C09D10?
The "D" indicates a DC coil with a fixed voltage band, but Rockwell uses additional ordering digits to specify the exact voltage. Always read the coil label on the unit; do not assume 24 V DC without verifying.
How is 100-C09D10 different from 100-C09EJ10?
The D10 has a fixed-voltage DC coil, while the EJ10 has a wide-range electronic DC coil that accepts a band of voltages. Both have one N.O. auxiliary. For new designs, the EJ variant simplifies inventory; for like-for-like replacement, stay on D10.
Do I need a freewheel diode across the coil?
Strongly recommended when a PLC transistor output or solid-state relay drives the DC coil. The 100-FSD suppressor module is the Rockwell-supplied option; otherwise wire a diode across the coil terminals as part of the control schematic.
What is the AC-3 motor rating at 480 V?
9 A AC-3, which corresponds to roughly 5 HP / 4 kW at 480 V three-phase. Always size the overload to the motor FLA rather than assuming the contactor rating equals the motor rating.
Can I add a normally-closed auxiliary contact?
Yes, by adding a 100-FA auxiliary block. The built-in arrangement on the 100-C09D10 is 1 N.O. only, so any required N.C. feedback comes from an add-on block.