| PartNumber | MB2181SB1W01 | MB2181SB1W01-4C-A | MB2181SB1W01-4B-A |
| Description | Pushbutton Switches 4PDT ON-(ON) SLDR | Pushbutton Switches ON(ON) SOLDER RED ROUND CAP BLK SHROUD | Pushbutton Switches ON(ON) SOLDER WHITE ROUND CAP BLK SHROUD |
| Manufacturer | NKK Switches | NKK Switches | NKK Switches |
| Product Category | Pushbutton Switches | Pushbutton Switches | Pushbutton Switches |
| RoHS | Y | Y | Y |
| Illuminated | Non-Illuminated | Non-Illuminated | Non-Illuminated |
| Lamp Type | - | - | - |
| Contact Form | 4PDT | 4PDT | 4PDT |
| Switch Function | ON - (OFF) | ON - (OFF) | ON - (OFF) |
| Current Rating | 6 A, 3 A | 6 A, 3 A | 6 A, 3 A |
| Voltage Rating AC | 125 VAC | 125 VAC | 125 VAC |
| Voltage Rating DC | 30 VDC | 30 VDC | 30 VDC |
| Mounting Style | Panel Mount | Panel Mount | Panel Mount |
| Termination Style | Solder Lug | Solder Lug | Solder Lug |
| Contact Plating | Silver | - | Silver |
| Actuator | Plunger | Round | Round |
| Series | MB2000 | MB2000 | - |
| Features | Button/cap ordered separately | - | - |
| Housing Material | Diallyl Phthalate Resin | - | - |
| Illumination | Non-Illuminated | Non-Illuminated | Non-Illuminated |
| Terminal Seal | Epoxy | - | - |
| Brand | NKK Switches | NKK Switches | NKK Switches |
| Flammability Rating | UL 94 V-0 | - | UL 94 V-0 |
| Actuator Style | Without Cap | - | Round |
| Life | 25000 Cycles | - | - |
| Product Type | Pushbutton Switches | Pushbutton Switches | Pushbutton Switches |
| Factory Pack Quantity | 1 | 1 | 1 |
| Subcategory | Switches | Switches | Switches |
| Part # Aliases | MB-2181L/B-CNG | - | - |
| Cap Color | - | Red | White |
| Product | - | - | Standard Switches |
| Type | - | - | Sealed |
| Height | - | - | 40 mm |
| Length | - | - | 22.3 mm |
| Width | - | - | 13 mm |