Rail Heating Products & Services  
1006 HWY 80, San MarcosRail Heating Products & Services  
1006 HWY 80, San Marcos TX 78667
Telephone (512) 396-4328 TX 78667
Telephone (512) 396-4328
Products
SRFN – 1.5m & 2.0m  -  Download PDF
 
Switch Rod Heaters
 
Application: Actuator Rod Snow and Ice Melting
 
Switch rod (SRFN) heaters are designed specifically to
keep switch actuator rods free and clear of snow and
ice.  These heaters have a flat heating surface and are
positioned underneath the rails directly below the
switch’s actuator rods.  The heater output:
SRFN – 1.5 ~ 450 watts operating on 240 volts.
SRFN – 2.0 ~ 600 watts operating on 240 volts.
 
Design. . .
 
SRFN heaters are manufactured to meet the specific
needs of each transit company based on the available
power supply.  A typical installation will include a review
of the rail, voltage and switch profiles and a
determination of the power requirements for the
application to provide a cost effective solution.
 
PRODUCT SPECIFICATIONS
 
Installation. . .
 
The SRFN heaters are a flat heater measuring 100mm
wide X 1.5m & 2.0m long models with a 15mm high
flange along each long side to assist in directing snow
and ice melt away from the switch.  These heaters are
rugged, yet flexible enough, to be easily adapted to the
requirements of a given rail switch rod installation.
Simple wire nut connections are made inside the box for
power connection.
 
Construction. . .
 
Inside the SRFN heater is a rugged, parallel path
resistive heating element that is encapsulated between
two layers of high temperature fiberglass reinforced
silicone rubber.  This encapsulated element is further
encased between two galvanized steel panels for further
durability and protection.  A Nema 4, junction box with
ground terminal and side entry to receive a rain tight
conduit fitting is mounted at one end of the heater.
 
Rail Heating Products & Services               108 Linda Dr., San Marcos TX 78666               Telephone (512) 396-4328