![Siemens S55155-A108 Valve Actuator specifications — New England Supply House [NESH-SPECTABLE-V1]](http://newenglandsupplyhouse.com/cdn/shop/files/specs-9294877458654.png?v=1790815037&width=1445)
The Siemens S55155-A108 valve actuator (SSC131.09U) is a reliable 3-position, fail-in-place Powermite MT Series actuator that replaces the SSC81U. Operating on 24 VAC with a floating control signal, it delivers 67 lbf (300 N) of positioning force and mounts directly with a coupling nut, no tools required.
Built-in manual override and LED position indication make it well suited for VAV, fan coil, unit ventilator, and chilled-ceiling terminal-unit applications.
Specifications
| Voltage | 24 VAC |
|---|---|
| Control Signal | 3-Position (Floating) |
| Positioning Force | 67 lbf (300 N) |
| Series | Powermite MT |
| Features | Manual Override, LED Indication, Fail-in-Place |
| Replaces | SSC81U |