Choosing among relays contactors industrial switches comes down to a few non-negotiable details: the control-coil voltage, number of poles, current rating, and whether the contactor fits a motor-control or definite-purpose application. A 24 V coil, 110/120 V coil, and 220 V coil serve different control-voltage requirements, while the GE option adds a 3-phase, NEMA Size 2 configuration.
Quick take
- The Fuji Electric SC-4-1 is the lowest-listed-price choice and includes a quantity of two used 32 A, 220 V contactors rated for 10 hp.
- The two Shopcorp 40 Amp 50 RES 2 Pole choices share the same listed price, 40 A current rating, 2-pole layout, and new condition. The deciding difference is the coil: one is 24 VAC and the other is 110/120 VAC.
- The GE CR306D0 carries the highest listed price, but it is also the only 45 A, 3-phase, 3-pole, NEMA Size 2 contactor and is described for 3-25 hp motors.
- The listed-price range runs from USD 17.10 to USD 79.99, a USD 62.89 spread. Start with the coil voltage and pole count rather than price alone.
Listed price comparison
| Contactor | Listed price | Price position | Key configuration |
|---|---|---|---|
| LOT of 2 Fuji Electric SC-4-1 Motor Contactor 32 Amp 10-HP SZ-CD1 220V Coil 32A | USD 17.10 | 220 V coil, 32 A, 10 hp, lot of 2, used | |
| GE CR306D0**0XAAAAH - Nema Size 2 - 45 Amp - 115-575 VAC 3-25 HP Motor Contactor | USD 79.99 | 45 A, 3-phase, 3-pole, NEMA Size 2, used | |
| AC Contactor 40 Amp 50 RES 2 Pole 24VAC Coil - Definite Purpose UL Listed | USD 22.99 | 24 V coil, 40 A, 2-pole, new | |
| AC Contactor 40 Amp 50 RES 2 Pole 110/120VAC Coil - Definite Purpose UL Listed | USD 22.99 | 110/120 V coil, 40 A, 2-pole, new |
Decision matrix
- Choose by control voltage first: the Shopcorp 24 VAC model is for a 24 V coil requirement, the Shopcorp 110/120 VAC model is for a 110/120 V coil requirement, and the Fuji Electric pair is for a 220 V coil requirement.
- Choose the Shopcorp form factor for a 2-pole definite-purpose contactor. Both versions are panel-mount, normally open 2-pole contactors with 40 A current ratings and 50 A resistive ratings.
- Choose the GE configuration when a 3-phase, 3-pole NEMA Size 2 contactor is the needed format. It is the only option here carrying those designations and the 3-25 hp motor range.
- Choose condition deliberately: both Shopcorp units are new, while the Fuji Electric and GE contactors are used.
Product notes
Fuji Electric SC-4-1 220 V Coil Lot of 2
The Fuji Electric SC-4-1 stands out when the job calls for two contactors with a 220 V coil rather than a single unit. Its listed 32 A current rating and 10 hp designation make the motor-contactor focus clear, and the quantity of two is useful for a matched pair of replacements or parallel projects. It is also the lowest-priced entry in this comparison. The key limitation is that these contactors are used and specifically configured with 220 V coils, so they are not the direct choice for the 24 V or 110/120 V control-voltage applications represented by the Shopcorp models.
GE CR306D0 NEMA Size 2 45 Amp Motor Contactor
The GE CR306D0 is the clearest match for an industrial motor-control requirement centered on a NEMA Size 2 contactor. Its 45 A rating, 3-phase and 3-pole configuration, plus stated 3-25 hp motor range distinguish it from the 2-pole Shopcorp options and the 10 hp Fuji pair. This is the contactor to prioritize when those NEMA and phase details define the application. Its limitation is specificity: it is a used 3-pole, 3-phase unit, and it has the highest listed price in the group, making it less aligned with a straightforward 2-pole definite-purpose replacement.
Shopcorp 40 Amp 2-Pole Contactor with 24 VAC Coil
Choose the Shopcorp 24 VAC contactor for a new 2-pole definite-purpose format where a 24 V coil is required. It combines a 40 A current rating with a 50 A resistive rating and is described for motor load, HVAC, refrigeration, lighting, and heat-pump applications. The normally open, panel-mount configuration gives this version a focused replacement profile. Its limitation is also its main differentiator: the coil is 24 VAC. That makes it a distinct choice from the identically priced 110/120 VAC Shopcorp model, despite their otherwise closely matched 40 A, 2-pole specifications.
Shopcorp 40 Amp 2-Pole Contactor with 110/120 VAC Coil
The Shopcorp 110/120 VAC version fits shoppers seeking the same new, 40 A, 2-pole definite-purpose contactor format with a higher-voltage control coil than the 24 VAC alternative. Like its Shopcorp counterpart, it is normally open, panel mount, carries a 50 A resistive rating, and is described for HVAC, refrigeration, lighting, and heat-pump work. Because both Shopcorp choices share the same listed price, the coil designation is the practical decision point. The limitation is that its 110/120 VAC coil does not fill a 24 VAC coil requirement; select this version only when the 110/120 V coil designation matches the intended control circuit.
Final recommendation by use case
For a 220 V, 32 A motor-contactor need involving two units, choose the Fuji Electric SC-4-1 lot. For a new 2-pole definite-purpose contactor, choose between the Shopcorp versions strictly by 24 VAC versus 110/120 VAC coil voltage. For a 3-phase, 3-pole NEMA Size 2 motor-control role up to 25 hp, the GE CR306D0 is the purpose-built choice among these four.
