Choosing an Electrical Switch
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To view switch wiring diagrams, select a part number and click Product Detail.
For technical drawings and 3-D models, click on a part number.
| No. of Circuits Controlled | Switch Starting Position | Switch Action | No. of Terminals | Industry Designation | Position Designation  | Switching Current @ Voltage | Max. Voltage | For Max. Panel Thick. | Mounting Hardware Included | Choose a Wire Connection Type | Each | |
2 Position with Rounded Toggle | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
For 1/2" Panel Cutout Dia. | ||||||||||||
| 4 | 4 Off (Normally Open) | Stays Switched (Maintained) | 8 | 4PST-NO | On-Off | 15 A @ 125 V AC/28 V DC | 28V DC 250V AC | 0.13" | Yes | 00000000 | 000000 | |
High-Current Toggle Switches
Able to withstand high currents, these switches are often used with motors and pumps.
For technical drawings and 3-D models, click on a part number.
| No. of Circuits Controlled | Switch Starting Position | Switch Action | No. of Terminals | Industry Designation | Position Designation | Switching Current @ Voltage | Max. Voltage | Dp. Behind Panel | Mounting Hardware Included | Each | |
2 Position with Quick-Disconnect Terminals | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
For 1/2" Panel Cutout Dia. | |||||||||||
| 4 | 4 Off (Normally Open) | Stays Switched (Maintained) | 8 | 4PST-NO | On-Off | 20 A @ 125 V AC, 20 A @ 30 V DC | 30V DC 250V AC | 1.3" | Yes | 0000000 | 000000 |
High-Current Time and Day Activated Switches
Control equipment with high currents such as landscape lighting, pumps, and heaters. Program these switches to turn a device on and off at a set time and day. Position trippers around the clock dial to set on and off times.
Seven-day switches can perform a different program each day of the week.
Additional trippers (sold separately) are sold in pairs that include one “on” tripper and one “off” tripper.
Switches | Additional Trippers | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| No. of Circuits Controlled | Switching Current @ Voltage | Input Voltage | Maximum On/Off Cycles | Minimum Set Time | Tripper Type | No. of Trippers | Industry Designation | Ht. | Wd. | Dp. | Wire Connection Type | Environment | Each | No. of Trippers Included | Pkg. | ||
7-Day Timing Cycle | |||||||||||||||||
| 4 | 40 A @ 240 V AC | 120V AC | 3 per Day | 3.5 hrs. | Removable | 4 | 4PST-NO | 12 1/2" | 8 1/4" | 4" | Screw Terminals | Indoor Only | 00000000 | 0000000 | 7 Pairs | 00000000 | 000000 |
Touch-Safe DIN-Rail Mount Infrequent-Cycle Relays
Operate equipment that cycles on and off from your control cabinet. Often called definite-purpose contactors, these relays meet UL 508 for use with air conditioning and heating. They mount directly to 35 mm DIN rail (also known as DIN 3 rail) for fast installation. These relays have recessed terminals that prevent fingers and other objects from touching live circuits.
Auxiliary contacts (sold separately) allow you to add a signaling device or control another relay.
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 | Max. Switching Voltage | Single Phase | Three Phase | Ht. | Wd. | Dp. | Each | |
Relays | ||||||||||||
4 Circuits Controlled with 4 Off (Normally Open)—4PST-NO | ||||||||||||
| 12 | 24V AC | 6.5VA | 20A | 30A | 600V AC | 1 1/2 hp @ 120 V AC 3 hp @ 240 V AC | 5 hp @ 240 V AC 10 hp @ 480 V AC 15 hp @ 600 V AC | 3.2" | 1.8" | 3.2" | 00000000 | 000000 |
| 12 | 24V AC | 6.5VA | 25A | 30A | 600V AC | 2 hp @ 120 V AC 3 hp @ 240 V AC | 5 hp @ 240 V AC 10 hp @ 480 V AC 15 hp @ 600 V AC | 3.2" | 1.8" | 3.2" | 00000000 | 00000 |
| 12 | 24V AC | 6.5VA | 30A | 32A | 600V AC | 2 hp @ 120 V AC 5 hp @ 240 V AC | 7 1/2 hp @ 240 V AC 15 hp @ 480 V AC 20 hp @ 600 V AC | 3.2" | 1.8" | 3.2" | 00000000 | 00000 |
| 12 | 24V AC | 6.5VA | 40A | 50A | 600V AC | 3 hp @ 120 V AC 7 1/2 hp @ 240 V AC | 10 hp @ 240 V AC 30 hp @ 480 V AC 40 hp @ 600 V AC | 3.5" | 2.4" | 3.5" | 00000000 | 000000 |
| 12 | 120V AC | 6.5VA | 20A | 30A | 600V AC | 1 1/2 hp @ 120 V AC 3 hp @ 240 V AC | 5 hp @ 240 V AC 10 hp @ 480 V AC 15 hp @ 600 V AC | 3.2" | 1.8" | 3.2" | 00000000 | 00000 |
| 12 | 120V AC | 6.5VA | 25A | 30A | 600V AC | 2 hp @ 120 V AC 3 hp @ 240 V AC | 5 hp @ 240 V AC 10 hp @ 480 V AC 15 hp @ 600 V AC | 3.2" | 1.8" | 3.2" | 00000000 | 00000 |
| 12 | 120V AC | 6.5VA | 30A | 32A | 600V AC | 2 hp @ 120 V AC 5 hp @ 240 V AC | 7 1/2 hp @ 240 V AC 15 hp @ 480 V AC 20 hp @ 600 V AC | 3.2" | 1.8" | 3.2" | 00000000 | 00000 |
| 12 | 120V AC | 6.5VA | 40A | 50A | 600V AC | 3 hp @ 120 V AC 7 1/2 hp @ 240 V AC | 10 hp @ 240 V AC 30 hp @ 480 V AC 40 hp @ 600 V AC | 3.5" | 2.4" | 3.5" | 00000000 | 000000 |
| 12 | 240V AC | 6.5VA | 20A | 30A | 600V AC | 1 1/2 hp @ 120 V AC 3 hp @ 240 V AC | 5 hp @ 240 V AC 10 hp @ 480 V AC 15 hp @ 600 V AC | 3.2" | 1.8" | 3.2" | 00000000 | 00000 |
| 12 | 240V AC | 6.5VA | 25A | 30A | 600V AC | 2 hp @ 120 V AC 3 hp @ 240 V AC | 5 hp @ 240 V AC 10 hp @ 480 V AC 15 hp @ 600 V AC | 3.2" | 1.8" | 3.2" | 00000000 | 00000 |
| 12 | 240V AC | 6.5VA | 30A | 32A | 600V AC | 2 hp @ 120 V AC 5 hp @ 240 V AC | 7 1/2 hp @ 240 V AC 15 hp @ 480 V AC 20 hp @ 600 V AC | 3.2" | 1.8" | 3.2" | 00000000 | 00000 |
| 12 | 240V AC | 6.5VA | 40A | 50A | 600V AC | 3 hp @ 120 V AC 7 1/2 hp @ 240 V AC | 10 hp @ 240 V AC 30 hp @ 480 V AC 40 hp @ 600 V AC | 3.5" | 2.4" | 3.5" | 00000000 | 000000 |
| 12 | 24V DC | 5.4W | 20A | 30A | 600V AC | 1 1/2 hp @ 120 V AC 3 hp @ 240 V AC | 5 hp @ 240 V AC 10 hp @ 480 V AC 15 hp @ 600 V AC | 3.2" | 1.8" | 3.9" | 0000000 | 000000 |
DIN-Rail Mount Touch-Safe Screw Terminal Relays
Quickly and safely mount these relays on 35 mm DIN rail (also known as DIN 3). IP20 rated, they have recessed terminals that prevent fingers and other objects from touching live circuits.
Relays that control 3 and 4 circuits are built to IEC dimensional standards and are often called IEC contactors.
Auxiliary contacts (sold separately) allow you to add a signaling device or control another relay. You can add one auxiliary contact to all of these relays. For relays with 12 terminals, you can add two side-mount auxiliary contacts.
For technical drawings and 3-D models, click on a part number.
Control | hp @ Switching Voltage | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Number of Terminals | Input Voltage | Power | Current, mA | Switching Current @ Voltage (Load Type) | Max. Switching Voltage | Single Phase | Three Phase | Ht. | Wd. | Dp. | Each | |
4 Circuits Controlled with 4 Off (Normally Open)—4PST-NO | ||||||||||||
| 10 | 24V AC | __ | 125 | 10 A @ 600 V AC | 600 V AC | __ | __ | 2.3" | 1.7" | 2.2" | 00000000 | 000000 |
| 10 | 120V AC | __ | 25 | 10 A @ 600 V AC | 600 V AC | __ | __ | 2.3" | 1.7" | 2.2" | 00000000 | 00000 |
| 10 | 240V AC | __ | 12.5 | 10 A @ 600 V AC | 600 V AC | __ | __ | 2.3" | 1.7" | 2.2" | 00000000 | 00000 |
| 10 | 24V DC | __ | 133 | 10 A @ 600 V AC | 600 V AC | __ | __ | 2.3" | 1.7" | 2.2" | 0000000 | 000000 |
| 12 | 24V AC | 6.5VA | __ | 25 A @ 600 V AC (Resistive Load) 9 A @ 600 V AC (Full Load) | 600 V AC | 3/4 hp @ 120 V AC 2 hp @ 240 V AC | 3 hp @ 240 V AC 5 hp @ 480 V AC 7 1/2 hp @ 600 V AC | 3.2" | 1.8" | 3.2" | 000000000 | 00000 |
| 12 | 24V AC | 6.5VA | __ | 11 A @ 600 V AC (Full Load) 28 A @ 600 V AC (Resistive Load) | 600 V AC | 1 hp @ 120 V AC 2 hp @ 240 V AC | 5 hp @ 240 V AC 7 1/2 hp @ 480 V AC 10 hp @ 600 V AC | 3.2" | 1.8" | 3.2" | 000000000 | 00000 |
| 12 | 24V AC | 6.5VA | __ | 17 A @ 600 V AC (Full Load) 32 A @ 600 V AC (Resistive Load) | 600 V AC | 1 hp @ 120 V AC 3 hp @ 240 V AC | 5 hp @ 240 V AC 10 hp @ 480 V AC 15 hp @ 600 V AC | 3.2" | 1.8" | 3.2" | 000000000 | 000000 |
| 12 | 24V AC | 6.5VA | __ | 22 A @ 600 V AC (Full Load) 45 A @ 600 V AC (Resistive Load) | 600 V AC | 2 hp @ 120 V AC 5 hp @ 240 V AC | 7 1/2 hp @ 240 V AC 15 hp @ 480 V AC 20 hp @ 600 V AC | 3.5" | 2.4" | 3.5" | 000000000 | 000000 |
| 12 | 24V AC | 6.5VA | __ | 32 A @ 600 V AC (Full Load) 55 A @ 600 V AC (Resistive Load) | 600 V AC | 3 hp @ 120 V AC 7 1/2 hp @ 240 V AC | 15 hp @ 240 V AC 30 hp @ 480 V AC 30 hp @ 600 V AC | 3.5" | 2.4" | 3.5" | 000000000 | 000000 |
| 12 | 120V AC | 6.5VA | __ | 25 A @ 600 V AC (Resistive Load) 9 A @ 600 V AC (Full Load) | 600 V AC | 3/4 hp @ 120 V AC 2 hp @ 240 V AC | 3 hp @ 240 V AC 5 hp @ 480 V AC 7 1/2 hp @ 600 V AC | 3.2" | 1.8" | 3.2" | 000000000 | 00000 |
| 12 | 120V AC | 6.5VA | __ | 11 A @ 600 V AC (Full Load) 28 A @ 600 V AC (Resistive Load) | 600 V AC | 1 hp @ 120 V AC 2 hp @ 240 V AC | 5 hp @ 240 V AC 7 1/2 hp @ 480 V AC 10 hp @ 600 V AC | 3.2" | 1.8" | 3.2" | 000000000 | 00000 |
| 12 | 120V AC | 6.5VA | __ | 17 A @ 600 V AC (Full Load) 32 A @ 600 V AC (Resistive Load) | 600 V AC | 1 hp @ 120 V AC 3 hp @ 240 V AC | 5 hp @ 240 V AC 10 hp @ 480 V AC 15 hp @ 600 V AC | 3.2" | 1.8" | 3.2" | 000000000 | 000000 |
| 12 | 120V AC | 6.5VA | __ | 22 A @ 600 V AC (Full Load) 45 A @ 600 V AC (Resistive Load) | 600 V AC | 2 hp @ 120 V AC 5 hp @ 240 V AC | 7 1/2 hp @ 240 V AC 15 hp @ 480 V AC 20 hp @ 600 V AC | 3.5" | 2.4" | 3.5" | 000000000 | 000000 |
| 12 | 120V AC | 6.5VA | __ | 32 A @ 600 V AC (Full Load) 55 A @ 600 V AC (Resistive Load) | 600 V AC | 3 hp @ 120 V AC 7 1/2 hp @ 240 V AC | 15 hp @ 240 V AC 30 hp @ 480 V AC 30 hp @ 600 V AC | 3.5" | 2.4" | 3.5" | 000000000 | 000000 |
| 12 | 240V AC | 6.5VA | __ | 25 A @ 600 V AC (Resistive Load) 9 A @ 600 V AC (Full Load) | 600 V AC | 3/4 hp @ 120 V AC 2 hp @ 240 V AC | 3 hp @ 240 V AC 5 hp @ 480 V AC 7 1/2 hp @ 600 V AC | 3.2" | 1.8" | 3.2" | 000000000 | 00000 |
| 12 | 240V AC | 6.5VA | __ | 11 A @ 600 V AC (Full Load) 28 A @ 600 V AC (Resistive Load) | 600 V AC | 1 hp @ 120 V AC 2 hp @ 240 V AC | 5 hp @ 240 V AC 7 1/2 hp @ 480 V AC 10 hp @ 600 V AC | 3.2" | 1.8" | 3.2" | 000000000 | 00000 |
| 12 | 240V AC | 6.5VA | __ | 17 A @ 600 V AC (Full Load) 32 A @ 600 V AC (Resistive Load) | 600 V AC | 1 hp @ 120 V AC 3 hp @ 240 V AC | 5 hp @ 240 V AC 10 hp @ 480 V AC 15 hp @ 600 V AC | 3.2" | 1.8" | 3.2" | 000000000 | 000000 |
| 12 | 240V AC | 6.5VA | __ | 22 A @ 600 V AC (Full Load) 45 A @ 600 V AC (Resistive Load) | 600 V AC | 2 hp @ 120 V AC 5 hp @ 240 V AC | 7 1/2 hp @ 240 V AC 15 hp @ 480 V AC 20 hp @ 600 V AC | 3.5" | 2.4" | 3.5" | 000000000 | 000000 |
| 12 | 240V AC | 6.5VA | __ | 32 A @ 600 V AC (Full Load) 55 A @ 600 V AC (Resistive Load) | 600 V AC | 3 hp @ 120 V AC 7 1/2 hp @ 240 V AC | 15 hp @ 240 V AC 30 hp @ 480 V AC 30 hp @ 600 V AC | 3.5" | 2.4" | 3.5" | 000000000 | 000000 |
| 12 | 24V DC | 5.4W | __ | 25 A @ 600 V AC (Resistive Load) 9 A @ 600 V AC (Full Load) | 600 V AC | 3/4 hp @ 120 V AC 2 hp @ 240 V AC | 3 hp @ 240 V AC 5 hp @ 480 V AC 7 1/2 hp @ 600 V AC | 3.2" | 1.8" | 3.9" | 00000000 | 000000 |
| 12 | 24V DC | 5.4W | __ | 17 A @ 600 V AC (Full Load) 32 A @ 600 V AC (Resistive Load) | 600 V AC | 1 hp @ 120 V AC 3 hp @ 240 V AC | 5 hp @ 240 V AC 10 hp @ 480 V AC 15 hp @ 600 V AC | 3.2" | 1.8" | 3.9" | 00000000 | 000000 |
| 12 | 24V DC | 5.4W | __ | 22 A @ 600 V AC (Full Load) 45 A @ 600 V AC (Resistive Load) | 600 V AC | 2 hp @ 120 V AC 5 hp @ 240 V AC | 7 1/2 hp @ 240 V AC 15 hp @ 480 V AC 20 hp @ 600 V AC | 3.5" | 2.4" | 4.2" | 00000000 | 000000 |
| 12 | 24V DC | 5.4W | __ | 32 A @ 600 V AC (Full Load) 55 A @ 600 V AC (Resistive Load) | 600 V AC | 3 hp @ 120 V AC 7 1/2 hp @ 240 V AC | 15 hp @ 240 V AC 30 hp @ 480 V AC 30 hp @ 600 V AC | 3.5" | 2.4" | 4.2" | 00000000 | 000000 |
| Number of Circuits Controlled | For Relay Width | Switch Starting Position | Industry Designation | Mounting Location | Each | |
| 2 | 1.7" | 1 Off (Normally Open) and 1 On (Normally Closed) | DPST-1NO/1NC | Front | 00000000 | 000000 |
| 2 | 1.8", 2.4" | 1 Off (Normally Open) and 1 On (Normally Closed) | DPST-1NO/1NC | Front | 00000000 | 00000 |
| 2 | 1.8", 2.4" | 1 Off (Normally Open) and 1 On (Normally Closed) | DPST-1NO/1NC | Side | 00000000 | 00000 |
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 | |
4 Circuits Controlled with 4 Off (Normally Open)—4PST-NO | ||||||||||||
With Quick-Disconnect and Screw Terminals | ||||||||||||
| 8 | 24V AC | 50.4VA | 25A | 35A | 2 hp @ 115 V AC 3 hp @ 230 V AC | 7 1/2 hp @ 230 V AC 10 hp @ 460 V AC 10 hp @ 575 V AC | 3.8" | 2.7" | 3.4" | 0.25" | 00000000 | 0000000 |
| 8 | 24V AC | 50.4VA | 30A | 40A | 2 hp @ 115 V AC 5 hp @ 230 V AC | 10 hp @ 230 V AC 15 hp @ 460 V AC 15 hp @ 575 V AC | 3.8" | 2.7" | 3.4" | 0.25" | 00000000 | 000000 |
| 8 | 24V AC | 50.4VA | 40A | 50A | 3 hp @ 115 V AC 7 1/2 hp @ 230 V AC | 10 hp @ 230 V AC 20 hp @ 460 V AC 20 hp @ 575 V AC | 3.8" | 2.7" | 3.4" | 0.25" | 00000000 | 000000 |
| 8 | 120V AC | 50.4VA | 25A | 35A | 2 hp @ 115 V AC 3 hp @ 230 V AC | 7 1/2 hp @ 230 V AC 10 hp @ 460 V AC 10 hp @ 575 V AC | 3.8" | 2.7" | 3.4" | 0.25" | 00000000 | 000000 |
| 8 | 120V AC | 50.4VA | 30A | 40A | 2 hp @ 115 V AC 5 hp @ 230 V AC | 10 hp @ 230 V AC 15 hp @ 460 V AC 15 hp @ 575 V AC | 3.8" | 2.7" | 3.4" | 0.25" | 00000000 | 000000 |
| 8 | 120V AC | 50.4VA | 40A | 50A | 3 hp @ 115 V AC 7 1/2 hp @ 230 V AC | 10 hp @ 230 V AC 20 hp @ 460 V AC 20 hp @ 575 V AC | 3.8" | 2.7" | 3.4" | 0.25" | 00000000 | 000000 |
| 8 | 24V DC | 5.1W | 25A | 35A | 2 hp @ 115 V AC 3 hp @ 230 V AC | 7 1/2 hp @ 230 V AC 10 hp @ 460 V AC 10 hp @ 575 V AC | 3.8" | 2.7" | 3.4" | 0.25" | 00000000 | 000000 |
| 8 | 24V DC | 5.1W | 30A | 40A | 2 hp @ 115 V AC 5 hp @ 230 V AC | 10 hp @ 230 V AC 15 hp @ 460 V AC 15 hp @ 575 V AC | 3.8" | 2.7" | 3.4" | 0.25" | 00000000 | 000000 |
| 8 | 24V DC | 5.1W | 40A | 50A | 3 hp @ 115 V AC 7 1/2 hp @ 230 V AC | 10 hp @ 230 V AC 20 hp @ 460 V AC 20 hp @ 575 V AC | 3.8" | 2.7" | 3.4" | 0.25" | 00000000 | 000000 |
| 8 | 208V AC, 240V AC | 50.4VA | 25A | 35A | 2 hp @ 115 V AC 3 hp @ 230 V AC | 7 1/2 hp @ 230 V AC 10 hp @ 460 V AC 10 hp @ 575 V AC | 3.8" | 2.7" | 3.4" | 0.25" | 00000000 | 000000 |
| 8 | 208V AC, 240V AC | 50.4VA | 30A | 40A | 2 hp @ 115 V AC 5 hp @ 230 V AC | 10 hp @ 230 V AC 15 hp @ 460 V AC 15 hp @ 575 V AC | 3.8" | 2.7" | 3.4" | 0.25" | 00000000 | 000000 |
| 8 | 208V AC, 240V AC | 50.4VA | 40A | 50A | 3 hp @ 115 V AC 7 1/2 hp @ 230 V AC | 10 hp @ 230 V AC 20 hp @ 460 V AC 20 hp @ 575 V AC | 3.8" | 2.7" | 3.4" | 0.25" | 00000000 | 000000 |
| Enclosures for 60A 3PST-NO Relays and 4PST-NO Relays | 00000000 | Each | 0000000 |
Screw Terminal Relays
Use the screw terminals to hardwire these relays. The built-in enclosure protects contacts from dust and dirt. These relays accept voltage drops up to 50% of the rated voltage without switching. They’re often used with industrial automation systems, security and emergency lighting, and small motors. Also known as power relays.
Switching Current @ Voltage | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Number of Terminals | Input Voltage | Control Current, mA | Off (Normally Open) Circuit Position | Maximum Switching Voltage | hp @ Switching Voltage | Ht. | Wd. | Dp. | Each | |
4 Circuits Controlled with 4 Off (Normally Open)—4PST-NO | ||||||||||
| 10 | 120V AC | 22 | 25 A @ 240 V AC/24 V DC | 250V AC | 1 1/2 hp @ 120 V AC 3 hp @ 240 V AC 3 hp @ 277 V AC | 1.4" | 2" | 2.5" | 0000000 | 000000 |
| 10 | 240V AC | 11 | 25 A @ 240 V AC/24 V DC | 250V AC | 1 1/2 hp @ 120 V AC 3 hp @ 240 V AC 3 hp @ 277 V AC | 1.4" | 2" | 2.5" | 0000000 | 00000 |
| 10 | 24V DC | 83 | 25 A @ 240 V AC/24 V DC | 250V AC | 1 1/2 hp @ 120 V AC 3 hp @ 240 V AC 3 hp @ 277 V AC | 1.4" | 2" | 2.5" | 0000000 | 00000 |