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Mil. Spec. Washdown Toggle Switches
These switches meet MIL-S-3950. A rubber seal protects them from washdowns.
Switches with an on-on, on-on-on, or (on)-on-on position designation alternate power between sets of terminals.
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 | Wire Connection Type | Each | |
2 Position | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
For 1/2" Panel Cutout Dia. | ||||||||||||
| 1 | 1 Off (Normally Open) | Stays Switched (Maintained) | 2 | SPST-NO | On-Off | 10 A @ 125 V AC, 15 A @ 28 V DC | 28V DC 125V AC | 1.16" | Yes | Screw Terminals | 00000000 | 000000 |
| 1 | 1 Off (Normally Open) | Springs Back (Momentary) | 2 | SPST | Off-(On) | 7 A @ 125 V AC, 10 A @ 28 V DC | 28V DC 125V AC | 1.16" | Yes | Screw Terminals | 00000000 | 00000 |
| 1 | 1 On (Normally Closed) | Springs Back (Momentary) | 2 | SPST | On-(Off) | 7 A @ 125 V AC, 10 A @ 28 V DC | 28V DC 125V AC | 1.16" | Yes | Screw Terminals | 00000000 | 00000 |
| 1 | 1 Off (Normally Open) or 1 On (Normally Closed) | Stays Switched (Maintained) | 3 | SPDT | On-On | 10 A @ 125 V AC, 15 A @ 28 V DC | 28V DC 125V AC | 1.16" | Yes | Screw Terminals | 00000000 | 00000 |
| 1 | 1 Off (Normally Open) or 1 On (Normally Closed) | Springs Back (Momentary) | 3 | SPDT | On-(On) | 7 A @ 125 V AC, 10 A @ 28 V DC | 28V DC 125V AC | 1.16" | Yes | Screw Terminals | 00000000 | 00000 |
| 2 | 2 Off (Normally Open) | Stays Switched (Maintained) | 4 | DPST-NO | On-Off | 15 A @ 125 V AC/28 V DC | 28V DC 125V AC | 1.35" | Yes | Screw Terminals | 00000000 | 00000 |
| 2 | 2 Off (Normally Open) | Springs Back (Momentary) | 4 | DPST | Off-(On) | 8 A @ 125 V AC, 10 A @ 28 V DC | 28V DC 125V AC | 1.35" | Yes | Screw Terminals | 00000000 | 00000 |
| 2 | 2 Off (Normally Open) or 2 On (Normally Closed) | Stays Switched (Maintained) | 6 | DPDT | On-On | 15 A @ 125 V AC/28 V DC | 28V DC 125V AC | 1.35" | Yes | Screw Terminals | 00000000 | 00000 |
| 2 | 2 Off (Normally Open) or 2 On (Normally Closed) | Springs Back (Momentary) | 6 | DPDT | On-(On) | 8 A @ 125 V AC, 10 A @ 28 V DC | 28V DC 125V AC | 1.35" | Yes | Screw Terminals | 00000000 | 00000 |
| 4 | 4 Off (Normally Open) | Stays Switched (Maintained) | 8 | 4PST | On-Off | 15 A @ 125 V AC, 12 A @ 28 V DC | 28V DC 125V AC | 1.35" | Yes | Screw Terminals | 00000000 | 00000 |
| 4 | 4 Off (Normally Open) or 4 On (Normally Closed) | Stays Switched (Maintained) | 12 | 4PDT | On-On | 15 A @ 125 V AC, 12 A @ 28 V DC | 28V DC 125V AC | 1.35" | Yes | Screw Terminals | 00000000 | 00000 |
3 Position | ||||||||||||
For 1/2" Panel Cutout Dia. | ||||||||||||
| 1 | 1 Off (Normally Open) or 1 On (Normally Closed) | Stays Switched (Maintained) | 3 | SPDT | On-Off-On | 10 A @ 125 V AC, 15 A @ 28 V DC | 28V DC 125V AC | 1.16" | Yes | Screw Terminals | 00000000 | 00000 |
| 1 | 1 Off (Normally Open) or 1 On (Normally Closed) | Springs Back (Momentary) | 3 | SPDT | (On)-Off-(On) | 7 A @ 125 V AC, 10 A @ 28 V DC | 28V DC 125V AC | 1.16" | Yes | Screw Terminals | 00000000 | 00000 |
| 1 | 1 Off (Normally Open) or 1 On (Normally Closed) | Springs Back (Momentary) | 3 | SPDT | (On)-Off-On | 7 A @ 125 V AC, 10 A @ 28 V DC | 28V DC 125V AC | 1.16" | Yes | Screw Terminals | 00000000 | 00000 |
| 2 | 2 Off (Normally Open) or 2 On (Normally Closed) | Stays Switched (Maintained) | 6 | DPDT | On-Off-On | 15 A @ 125 V AC/28 V DC | 28V DC 125V AC | 1.35" | Yes | Screw Terminals | 00000000 | 00000 |
| 2 | 2 Off (Normally Open) or 2 On (Normally Closed) | Stays Switched (Maintained) | 6 | DPDT | On-On-On | 15 A @ 125 V AC/28 V DC | 28V DC 125V AC | 1.35" | Yes | Screw Terminals | 00000000 | 00000 |
| 2 | 2 Off (Normally Open) or 2 On (Normally Closed) | Springs Back (Momentary) | 6 | DPDT | (On)-Off-(On) | 8 A @ 125 V AC, 10 A @ 28 V DC | 28V DC 125V AC | 1.35" | Yes | Screw Terminals | 00000000 | 00000 |
| 2 | 2 Off (Normally Open) or 2 On (Normally Closed) | Springs Back (Momentary) | 6 | DPDT | (On)-Off-On | 8 A @ 125 V AC, 10 A @ 28 V DC | 28V DC 125V AC | 1.35" | Yes | Screw Terminals | 00000000 | 00000 |
| 2 | 2 Off (Normally Open) or 2 On (Normally Closed) | Springs Back (Momentary) | 6 | DPDT | (On)-On-(On) | 8 A @ 125 V AC, 10 A @ 28 V DC | 28V DC 125V AC | 1.35" | Yes | Screw Terminals | 00000000 | 00000 |
| 2 | 2 Off (Normally Open) or 2 On (Normally Closed) | Springs Back (Momentary) | 6 | DPDT | (On)-On-On | 8 A @ 125 V AC, 10 A @ 28 V DC | 28V DC 125V AC | 1.35" | Yes | Screw Terminals | 00000000 | 00000 |
| 4 | 4 Off (Normally Open) or 4 On (Normally Closed) | Stays Switched (Maintained) | 12 | 4PDT | On-Off-On | 15 A @ 125 V AC, 12 A @ 28 V DC | 28V DC 125V AC | 1.35" | Yes | Screw Terminals | 00000000 | 000000 |
| 4 | 4 Off (Normally Open) or 4 On (Normally Closed) | Springs Back (Momentary) | 12 | 4PDT | (On)-Off-(On) | 8 A @ 125 V AC, 10 A @ 28 V AC | 28V DC 125V AC | 1.35" | Yes | Screw Terminals | 00000000 | 000000 |
Mil. Spec. Washdown Snap-Acting Switches
Plunger
Roller Lever
Keep out dirt and moisture—the sealed housing on these switches is watertight and meet MIL-PRF-8805. They’re sized to fit in the tiniest of spaces. To minimize arcing and prevent contacts from sticking, they open and close circuits quickly. They’re often used as door-open indicators on appliances and enclosures or as an internal component in limit, pressure, and temperature switches.
For technical drawings and 3-D models, click on a part number.
Wire Leads | Housing | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| No. of Circuits Controlled | Switch Starting Position | Switch Action | Industry Designation | Switching Current @ Voltage | Max. Voltage | Operating Temp. Range, °F | Actuator Ht. | Wire Connection Type | No. of | Lg. | Lg. | Ht. | Dp. | Lever Lg. | Each | |
Plunger Actuator Style | ||||||||||||||||
| 1 | 1 Off (Normally Open) | Springs Back (Momentary) | SPST-NO | 5 A @ 250 V AC, 5 A @ 30 V DC | 250V AC 30V DC | -65° to 221° | 0.15" | Wire Leads | 2 | 12" | 0.88" | 0.6" | 0.35" | __ | 0000000 | 0000000 |
| 1 | 1 On (Normally Closed) | Springs Back (Momentary) | SPST-NC | 5 A @ 250 V AC, 5 A @ 30 V DC | 250V AC 30V DC | -65° to 221° | 0.15" | Wire Leads | 2 | 12" | 0.88" | 0.6" | 0.35" | __ | 0000000 | 000000 |
| 1 | 1 Off (Normally Open) or 1 On (Normally Closed) | Springs Back (Momentary) | SPDT | 5 A @ 250 V AC, 5 A @ 30 V DC | 250V AC 30V DC | -65° to 221° | 0.15" | Wire Leads | 3 | 12" | 0.88" | 0.6" | 0.35" | __ | 0000000 | 000000 |
Roller Lever Actuator Style | ||||||||||||||||
| 1 | 1 Off (Normally Open) | Springs Back (Momentary) | SPST-NO | 5 A @ 250 V AC, 5 A @ 30 V DC | 250V AC 30V DC | -65° to 221° | 0.46" | Wire Leads | 2 | 12" | 0.88" | 0.6" | 0.34" | 0.94" | 0000000 | 000000 |
| 1 | 1 On (Normally Closed) | Springs Back (Momentary) | SPST-NC | 5 A @ 250 V AC, 5 A @ 30 V DC | 250V AC 30V DC | -65° to 221° | 0.46" | Wire Leads | 2 | 12" | 0.88" | 0.6" | 0.34" | 0.94" | 0000000 | 000000 |
| 1 | 1 Off (Normally Open) or 1 On (Normally Closed) | Springs Back (Momentary) | SPDT | 5 A @ 250 V AC, 5 A @ 30 V DC | 250V AC 30V DC | -65° to 221° | 0.46" | Wire Leads | 3 | 12" | 0.88" | 0.6" | 0.34" | 0.94" | 0000000 | 000000 |