Siemens MS-501 is a conventional double-action manual fire alarm pull station with a normally open SPST contact. It is used on Siemens low-voltage systems and can also be connected to fire alarm systems from other makers.
Double action means a push-in tab has to be operated before the pull-down lever can be reached. The lever then locks down until the station is reset with an Allen key.
Features
- Double action: push in the tab, then pull the lever down
- Normally open SPST contact
- Molded red polycarbonate with white lettering
- No break rods necessary
- Surface or semi-flush mounting
- Meets ADA guidelines
Specifications
| Part number |
500-620522 |
| Contact |
N.O. SPST |
| Approvals |
UL listed; FM, CSFM, NYCFD approved |
| Country of origin |
United States of America |
Specifications taken from the manufacturer data sheet: Data Sheet 6183 - MS-51 / MS-501 Manual Fire Alarm Boxes.
