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The Allen-Bradley 100-C09EJ10 is a Bulletin 100-C IEC contactor rated 9 A with an electronic coil interface and a 1 N.O. auxiliary contact configuration. It is one of the standard 9 A frame contactors used in motor branch circuits, lighting contactors, heater control, and small pump panels across Rockwell-spec enclosures.
This article covers what the 100-C09EJ10 is, the meaning of each segment in the catalog number, the same-frame siblings you might confuse it with, and the matching overload relays and auxiliary blocks you typically order with it.
Technical Specifications
| Parameter | Specification |
|---|---|
| Catalog number | 100-C09EJ10 |
| Series / family | Bulletin 100-C IEC contactor |
| Frame size | 9 A frame (C09) |
| Number of poles | 3 main poles |
| 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 |
| Coil interface | Electronic coil ("EJ" suffix), wide-range DC, typ. 24-60 V DC nominal range as marked on coil |
| Coil power | Low pickup / hold consumption, electronically regulated |
| Auxiliary contacts (built-in) | 1 N.O. |
| Auxiliary contact second position | Empty (for 100-FA add-on block if needed) |
| Mechanical life | Approx. 10 million operations |
| Electrical life (AC-3) | Approx. 1 million operations |
| Mounting | 35 mm DIN rail or panel screws |
| Width | 45 mm |
| Approvals | UL, CSA, CE, CCC |
| Ambient temperature (operation) | -25 degC to +60 degC |
Always confirm the exact coil voltage band stamped on the unit before installing, because the "EJ" electronic coil designation covers a wide range and the printed band varies by date code.
Catalog Number Breakdown
| Segment | Meaning |
|---|---|
| 100-C | Bulletin 100-C IEC contactor |
| 09 | 9 A AC-3 frame |
| EJ | Electronic coil, wide-range |
| 10 | 1 N.O. + 0 N.C. auxiliary contact arrangement |
Same-Frame Comparison: 100-C09 Variants
| Catalog | Coil | Aux contacts | Typical use |
|---|---|---|---|
| 100-C09EJ10 | Electronic, wide-range DC | 1 N.O. | PLC-driven control with single status feedback |
| 100-C09D10 | Direct DC coil (fixed voltage) | 1 N.O. | Standard DC control circuits |
| 100-C09KD10 | 120 V AC coil | 1 N.O. | 120 V AC control circuits, US standard |
| 100-C09KN10 | 240 V AC coil | 1 N.O. | 240 V AC control circuits |
| 100-C09EJ01 | Electronic, wide-range DC | 1 N.C. | Interlock circuits requiring N.C. feedback |
| 100-C09EJ400 | Electronic, wide-range DC | 4 N.O. (no main aux) | Lighting / multi-circuit switching |
The "10" and "01" suffixes are the most common point of confusion. The 100-C09EJ10 has one normally-open auxiliary; if your wiring diagram calls for a normally-closed feedback contact, you need 100-C09EJ01 or you have to add a 100-FA auxiliary block.
Common Pairings and Compatible Components
- Overload relays: Bulletin 193 / 592 EE or E1 Plus solid-state overloads sized for 1 - 9 A motor FLA.
- Auxiliary contact blocks: 100-FA series side-mount or front-mount for adding extra N.O. / N.C. contacts.
- Surge suppressors: 100-FSV / 100-FSC modules for the coil terminals (for AC-coil siblings, not strictly required on the EJ electronic coil).
- Mechanical interlocks: 100-MCA mechanical interlock kit for reversing starter pairs.
- Reversing kits: 100-K reversing wiring kits when used in pairs.
- Timer modules: 100-FPT pneumatic on-delay/off-delay heads when timed contacts are needed.
Common Use Cases
- Small motor starters up to 5 HP at 480 V, paired with an E1 Plus overload.
- Pump and fan control in HVAC panels.
- Heater contactors for resistive loads up to 25 A AC-1.
- PLC-driven switching from 24 V DC outputs, taking advantage of the low-power electronic coil.
- Replacement of legacy 100-C09Z* stock when standardising panels on the wide-range electronic coil.
Why Buy Your 100-C09EJ10 from Rabwellplc
9 A IEC contactors look interchangeable on paper, but coil ranges and auxiliary configurations are easy to mis-order. We stock the 100-C09EJ10 alongside its DC and AC-coil siblings in the Allen-Bradley contactor program, with date codes verified and original Rockwell packaging. If your panel uses mixed coil voltages or you need matching overload relays, our application desk can spec the full starter set on one line item. We also stock cross-vendor equivalents for plants standardising on a single supplier.
Check 100-C09EJ10 stock and pricing ->
Frequently Asked Questions
What does the "EJ" mean in 100-C09EJ10?
"EJ" designates an electronic coil with a wide-range DC operating window, instead of a fixed-voltage AC or DC coil. It uses electronics to maintain pickup and hold across a band of input voltages, which simplifies global panel designs.
Is 100-C09EJ10 a 1 N.O. or 1 N.C. contactor?
The "10" suffix means 1 N.O. + 0 N.C. built-in auxiliary contact. If you need N.C. feedback, either order 100-C09EJ01 or add a 100-FA auxiliary contact block.
Can I use 100-C09EJ10 to replace a 100-C09KD10?
Mechanically yes, but the coil interface is different. The KD10 has a 110/120 V AC coil; the EJ10 expects DC. Do not swap them without rewiring the control circuit.
What overload relay matches the 100-C09EJ10?
For motor protection, an E1 Plus or 193-EE solid-state overload sized for the motor's full-load current is the standard pairing. For a 5 HP / 480 V motor (about 7.6 A FLA), pick the 3.2 - 16 A range model.
Do I need a surge suppressor on the coil?
The electronic coil already includes internal protection, so an external 100-FSV is not required. On AC-coil siblings (KD, KN), a coil surge suppressor is recommended when the contactor is switched by a PLC output or solid-state relay.