About Motor Switches and Starters
More
DIN-Rail Mount Solid State Relays
Unlike mechanical relays, these solid state relays have no moving parts, so they require less maintenance and last longer, switch faster, and are quieter. They mount on 35 mm DIN rail (also known as DIN 3) for fast installation. IP20 rated, their terminals are recessed, so they prevent fingers and other objects from touching live circuits.
Relays with an integrated heat sink disperse heat to increase the relay’s current rating.
For technical drawings and 3-D models, click on a part number.
| Number of Terminals | Input Voltage | Control Current, mA | Switching Current @ Voltage (Load Type) | Max. Switching Voltage | hp @ Switching Voltage | Ht. | Wd. | Dp. | Features | Each | |
1 Circuit Controlled with 1 Off (Normally Open)—SPST-NO | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Single Phase | |||||||||||
| 4 | 5V DC, 6V DC, 12V DC, 24V DC, 30V DC | 11 | 60 A @ 600 V AC (Full Load) | 660V AC | 1 1/2 hp @ 115 V AC 3 hp @ 230 V AC | 4.33" | 2.76" | 5.24" | Integrated Heat Sink, LED Indicator | 0000000 | 0000000 |
Infrequent-Cycle Relays
For use with equipment that cycles on and off, these relays meet UL 508 for air conditioning and heating. Connections are accessible from the front, so you can mount relays side-by-side. Also known as definite-purpose contactors.
Enclosures (sold separately) are NEMA 1 rated to protect contacts from corrosion.
Also Available: Auxiliary contacts for 3.8"-7.2" Ht. relays. They allow you to add a signaling device or control another relay. Please select 6564K99, then select the McMaster-Carr part number of your relay and whether you want to switch one circuit on (1 Normally Open) or off (1 Normally Closed).
For technical drawings and 3-D models, click on a part number.
Switching Current @ 600V AC | hp @ Switching Voltage | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Number of Terminals | Input Voltage | Control Power | Full Load  | Resistive Load | Single Phase | Three Phase | Ht. | Wd. | Dp. | Quick-Disconnect Tab Wd. | Each | |
2 Circuits Controlled with 2 Off (Normally Open)—DPST-NO | ||||||||||||
With Quick-Disconnect and Screw Terminals | ||||||||||||
| 4 | 24V AC | 50.4VA | 60A | 75A | 5 hp @ 115 V AC 10 hp @ 230 V AC | 20 hp @ 230 V AC 40 hp @ 460 V AC 40 hp @ 575 V AC | 3.8" | 2.6" | 4" | 0.25" | 00000000 | 0000000 |
| 4 | 120V AC | 50.4VA | 60A | 75A | 5 hp @ 115 V AC 10 hp @ 230 V AC | 20 hp @ 230 V AC 40 hp @ 460 V AC 40 hp @ 575 V AC | 3.8" | 2.6" | 4" | 0.25" | 00000000 | 000000 |
| 4 | 24V DC | 5.1W | 60A | 75A | 5 hp @ 115 V AC 10 hp @ 230 V AC | 20 hp @ 230 V AC 40 hp @ 460 V AC 40 hp @ 575 V AC | 3.8" | 2.6" | 4" | 0.25" | 00000000 | 000000 |
| 4 | 208V AC, 240V AC | 50.4VA | 60A | 75A | 5 hp @ 115 V AC 10 hp @ 230 V AC | 20 hp @ 230 V AC 40 hp @ 460 V AC 40 hp @ 575 V AC | 3.8" | 2.6" | 4" | 0.25" | 00000000 | 000000 |
3 Circuits Controlled with 3 Off (Normally Open)—3PST-NO | ||||||||||||
With Quick-Disconnect and Screw Terminals | ||||||||||||
| 6 | 24V AC | 50.4VA | 60A | 75A | 5 hp @ 115 V AC 10 hp @ 230 V AC | 20 hp @ 230 V AC 40 hp @ 460 V AC 40 hp @ 575 V AC | 3.8" | 2.6" | 4" | 0.25" | 00000000 | 000000 |
| 6 | 120V AC | 50.4VA | 60A | 75A | 5 hp @ 115 V AC 10 hp @ 230 V AC | 20 hp @ 230 V AC 40 hp @ 460 V AC 40 hp @ 575 V AC | 3.8" | 2.6" | 4" | 0.25" | 00000000 | 000000 |
| 6 | 24V DC | 5.1W | 60A | 75A | 5 hp @ 115 V AC 10 hp @ 230 V AC | 20 hp @ 230 V AC 40 hp @ 460 V AC 40 hp @ 575 V AC | 3.8" | 2.6" | 4" | 0.25" | 00000000 | 000000 |
| 6 | 208V AC, 240V AC | 50.4VA | 60A | 75A | 5 hp @ 115 V AC 10 hp @ 230 V AC | 20 hp @ 230 V AC 40 hp @ 460 V AC 40 hp @ 575 V AC | 3.8" | 2.6" | 4" | 0.25" | 00000000 | 000000 |
| Enclosures for 60A 3PST-NO Relays and 4PST-NO Relays | 00000000 | Each | 0000000 |
High-Starting-Current Vehicle Relays
Relay Socket and
Surface Mounting
Also known as automotive relays, these relays can handle high starting (inrush) currents.
Relays for surface mounting have a tab for added security in high-vibration applications.
Relays | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Switching Current @ Voltage | Relay Sockets with Crimp-On Terminals | Relay Sockets with Wire Leads | |||||||||||||
| Number of Terminals | Input Voltage | Off (Normally Open) Circuit Position | Max. Switching Voltage | Max. Starting Current, A | Control Current, mA | Ht. | Wd. | Dp. | Quick-Disconnect Tab Wd. | Each | Each | Each | |||
For Relay Socket and Surface Mounting | |||||||||||||||
1 Circuit Controlled with 1 Off (Normally Open)—SPST-NO | |||||||||||||||
| 4 | 24V DC | 60 A @ 24 V DC | 36V DC | 200 | 77 | 1.3" | 1.4" | 0.9" | 0.25" and 0.375" | 0000000 | 000000 | 0000000 | 00000 | 0000000 | 000000 |
Energy-Saving Motor Starters
Save electricity and extend motor life by reducing the motor's starting current. These starters gradually start and stop motors. Use them on motors where torque varies, such as pumps, compressors, and conveyors. All have an auxiliary contact to send a signal or connect to another device, such as an alarm or indicating light.
For technical drawings and 3-D models, click on a part number.
Switching | Time, sec. | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Full Load Current, A | Input Voltage | Voltage | Current | Electrical Phase (hp) | Acceleration | Deceleration | Ht. | Wd. | Mount. Location | Each | |
Motor Starters with 1 Auxiliary Contact—1 Off (Normally Open) | |||||||||||
| 59 | 24V DC | 208-600V AC | 60A | Three (20 hp @ 240 V AC) Three (40 hp @ 480 V AC) | 1-20 | 0-20 | 8.7" | 2.8" | Surface | 0000000 | 0000000 |