KM series miniature pushbutton switches feature a reliable contact design and are available with pretravel and overtravel. An extended overtravel option is also available. The switches are RoHS-compliant and are suitable for applications such as alarm systems, computers, and detector switches.
The KM Series subminiature pushbutton switches from C&K are designed for reliable contact performance in applications such as alarm systems, computers, and detector switches. Features include reliable contact design, optional extended over‑travel, and RoHS compliance.
The datasheet lists detailed electrical specifications, material construction, and ordering information, including contact ratings, electrical life, insulation resistance, dielectric strength, operating temperature range, and available caps and hardware options.
| Contact Rating | 0.25 A @ 125 V AC/DC (KM11, KM12); 1 A @ 125 V AC or 28 V DC (KM33) |
|---|---|
| Electrical Life | 10,000 actuations min. at full load |
| Contact Resistance | Below 30 mΩ typ. initial @ 2‑4 V DC, 100 mA |
| Dielectric Strength | 1,000 Vrms min. @ sea level |
| Operating Temperature | -30 °C to 85 °C |
| Cap Installation Force | 10 lbs max. |
| RoHS Compliance | Yes, for models with Q or B contact material |
KM11 and KM12 switches are rated for 0.25 A at 125 V AC or DC.
The switches have an electrical life of at least 10,000 actuations at full load.
Yes, any models supplied with Q or B contact material are RoHS compliant.
They operate from –30 °C up to 85 °C.