This document describes the features and specifications of the NKK military explosion-proof pushbutton switch ST40AM.
This NKK product leaflet covers toggle switches including the ST40AM110, presenting them as explosion-proof, waterproof, and dustproof types. It describes the DSP C 6310D toggle switch general rule and the Grade M, Grade J, and Grade N classifications, with certified product lists and ratings.
The document also includes appearance and shape references for ST40 and ST50 models, mounting hole dimension drawings, and Grade J/N test outlines. It states that Grade M conforms to MIL-spec. This manual is written in Japanese.
| Switch type | Explosion-proof, waterproof, dustproof type |
|---|---|
| Circuit configuration (ST40AM110) | Single-pole single-throw |
| Contact resistance | 10 mΩ maximum (DC 2 to 4 V, 1 A) |
| Insulation resistance | 100 MΩ minimum (DC 500 V) |
| Electrical life | 20,000 operations at rated current |
Grade M is the classification for switches conforming to MIL-spec.
The document lists ST40AM110 in the Grade M certified product list under DSP C 6310D.
It has screw terminals and a single-pole single-throw circuit.
The document describes the certified products as explosion-proof, waterproof, and dustproof types.