M400 & M450 Manual Fire Alarm Pull Stations
- Rugged die-cast metal construction with durable “fire engine red” finish
- UL and c-UL listed
- FM approved
- Rated NEMA4X (IP-65) for indoor or outdoor installations
- Single action and dual action stations available
- Key operated lock for resetting and testing
- Clearly visible plastic “break rod” discourages false alarms
- Provides UL Sensitivity Test Feature
- Identical appearance on both explosion proof and general purpose stations

MODEL 400
MODEL 450
Model M400 (Explosion Proof)
- Suitable for Class I Groups B,C,D, Class
II Groups E,F,G, Class III hazardous
locations (IEC EEx d IIC T6) - Two 3/4″ NPT ports for rigid conduit or
cable gland installation - Marine rated for off-shore use
- NEMA 4X construction
Model M450 (General Purpose)
- Flush mounts on standard single-gang
outlet box - Optional surface mounting boxes
available - Gold plated contacts for reliable
operation - ADA compliant
THE STATIONS
Safety Systems Models M400 and M450
Manual Stations are high quality die cast
metal units designed for quick, reliable
response in emergency situations. The
stations are activated by grasping the handle
marked “pull” and pulling it down to the
locked position. This causes the normally
open switch contact to close, thus transmitting
the alarm condition to the fire detection
system. On dual action models only, it is
necessary to push in on the bar marked
“push” to grasp the pull handle. The pull
handle locks into the extended position
when activated, and is visible from 50 feet
away. The “break rod” is clearly visible
when the station is set, and will shatter when
the station is activated. Once activated, the
key lock must be used to reset the pull rod.
The key lock may also be used for testing
the manual station.
When suitably installed, these stations
meet the requirements of the Americans with
Disabilities Act (ADA).
Architect’s and Engineer’s Specifications
Manual Fire Alarm Pull Stations shall be
of cast metal construction with “fire engine
red” finish. Stations shall be supplied for
indoor or outdoor installation in hazardous
or general purpose areas. Front panel
appearance on all stations shall be identical,
whether for indoor, outdoor, hazardous or
general purpose installation. Hazardous
location stations shall be rated Class I
Groups B,C,D, Class II Groups E,F,G, Class
III, EEx d IIC T6. Both surface mounting
and flush mounting versions shall be
available. The stations shall be marine rated
for off-shore use.
Technical Specifications and Ordering Information
Download Product Information PDF
TECHNICAL SPECIFICATIONS
Switch rating: | Double pole, 10 amps @ 120 VAC, 1 amp @ 30 VDC (Explosion proof stations) Single pole, 1 amp @ 30 VAC or DC (General purpose station) The 1 kohm “in-line” resistor required for the SST NOVA-5000 Control System is factory installed in series with this switch. |
Size: | 4.75 x 3.25 x 3.50 inches (Explosion proof station) 4.75 x 3.25 x 1.10 inches (General purpose stations) 4.75 x 3.25 x 2.25 inches (Surface mounting back boxes) |
Weight: | 4.5 pounds (Explosion proof station) 1.0 pound (General purpose station) 0.75 pound (Surface mounting back boxes) |
ORDERING INFORMATION
EXPLOSION PROOF VERSION
PART NUMBER | DESCRIPTION |
400-1 | Model M400 Manual Fire Alarm Pull Station, explosion proof, single action (pull to operate) |
400-2 | Model M400 Manual Fire Alarm Pull Station, explosion proof, dual action (push, then pull to operate) |
451-3 | Replacement break rods, package of 12 |
ORDERING INFORMATION
GENERAL PURPOSE VERSION
PART NUMBER | DESCRIPTION |
450-1 | Model M450 Manual Fire Alarm Pull Station, general purpose, single action (pull to operate), less back box |
450-2 | Model M450 Manual Fire Alarm Pull Station, general purpose, dual action (push, then pull to operate), less back box |
451-1 | Surface mounting back box, interior, for Model M450 only |
451-2 | Surface mounting back box, weatherproof, for Model M450 only |
451-3 | Replacement break rods, package of 12 |