Choosing the right contactor for a motor control panel usually comes down to coil voltage, working current, and whether you need simple switching or reversing control. The two selections here sit at opposite ends of the price range in the relays, contactors, and industrial switches family: one is a new power contactor built for 110V AC duty, and the other is a used reversing motor starter with its overload relay already included.
Quick verdict
For a new, direct power contactor with a stated 18A working-current rating, the Modern Power AC Contactor is the more straightforward, lower-priced choice. For a reversing motor starter package with a 1.6/5A overload relay already in the kit, the AB 100-C09 is the more complete, higher-priced option. Pick the one that matches the direction your motor needs to go and the amount of protection you want bundled in.
At a glance
| Modern Power AC Contactor | AB 100-C09 Reversing Motor Starter | |
|---|---|---|
| Listed price | USD 16.91 | USD 74.99 |
| Price bar | ||
| Type | Power AC contactor | Reversing motor starter contactor |
| Coil | AC110V 50/60Hz | 120V coil |
| Condition | New | Used |
Where each product wins
Choose the Modern Power AC Contactor if:
- You want a new contactor with a stated working-current rating and no need for reversing logic.
- You plan to assemble your own overload-protection arrangement.
- The lower listed price matters more than having a reversing assembly.
Choose the AB 100-C09 if:
- You need a reversing motor starter for bidirectional motor control.
- You want the overload relay included in the package.
- You can use the model 193-EA1EB and MPN 100-C09D10 identifiers to match Allen Bradley-based controls.
Product notes
Modern Power AC Contactor AC110V 50/60Hz Motor Starter Relay 18A Working Current
Start here if you want a new contactor with a clear working-current figure. The title states 18A working current and a 110V 50/60Hz coil, making this a straightforward building block for a control circuit. It uses a plastic die-cast body with impact resistance and built-in auxiliary contacts that work with momentary buttons. It sits in the lower part of this price range, which makes it an easy pick when you do not need reversing functionality. If your control scheme needs overload protection, add that relay separately to your parts list so the contactor is not the only protective element in the circuit.
AB 100-C09 Reversing Motor Starter
Choose this one when your circuit has to run a motor in both directions. The title calls it a reversing motor starter contactor with a 1.6/5A overload relay and a 120V coil, and the package includes the relay along with connector wire between the contactors. That makes the kit more complete before you start adding parts than the Modern Power unit. The supplied model 193-EA1EB and MPN 100-C09D10 give you concrete identifiers for matching Allen Bradley-based controls. The trade-offs are the used condition and the higher part of the price range, so inspect the contactor and confirm the relay range fits your motor's full-load current before putting it into service.
Final choice by use case
- For a simple new contactor you can integrate into your own control circuit: Modern Power AC Contactor.
- For a reversing starter where overload protection is already part of the package: AB 100-C09.
- When the lower listed price is the deciding factor: Modern Power AC Contactor.
- When you need concrete part identifiers for an Allen Bradley-based panel: AB 100-C09.
