Dual DC-DC Converter for OS Circuits and DC Island Circuits with built-in Track Current Limit Resistors
WHAT IS THE OS-BOSS DCX2?
‘OS’ stands for “over switch,” or more precisely, “train-over-switch.” The word section often follows ‘OS’ to make reference to an ‘OS-section.’
An OS-section is trackage that includes a track switch plus limited additional track beyond the fouling point and before the switchpoints.
Track switches in railroad switchyards, control points and other locations, may be “thrown” remotely by operating personnel or a computer. To avoid causing a derailment, a switch must never be thrown if the OS-section is, or soon will be, occupied by a locomotive or railcar. An OS-section is usually configured as a short track circuit capable of detecting if it is occupied. If occupied, changing the switch position is prevented or delayed until the OS-section is unoccupied.
The os-Boss dcx2 is a dual DC-DC converter that is typically powered by 12 to 14 VDC, that is converted to two electrically isolated 2.2 VDC outputs. The outputs are used to energize two separate track circuits made up of the straight and the diverging part of the switch within an OS-section. Each circuit is connected to a relay (or other equipment) which determines if the switch may be thrown.
Features
Two Isolated 2.2 VDC, 2.5 Amp Regulated Outputs
Built-in User Adjustable 0 to 5 Ohm Track Current Limit Resistor for Each Output
Lightning and Surge Protection on Input and Outputs
Self-resetting Fuse Protection on Input and Outputs
LED Status Indicator for Battery Input and Each 2.2 VDC Output
Compact Footprint – 4.4″ x 2.4″ x 1.6″
Sturdy Aluminum Powder Coated Enclosure
DIN Rail, B or P-150 Type Relay Rack Mounting Base Available
Three-year Limited Warranty
Benefits
2.5 Amp outputs can easily drive low resistance track circuits that use 1 Ohm track relays
Regulated outputs unaffected by changes in battery input voltage or load conditions
Built-in user adjustable track current limit resistors eliminates cost of resistors, wiring, mounting and required space
Exceptionally reliable, efficient operation even at full load or with outputs continuously short-circuited
LED indicators provide “at-a-glance” status of input and outputs
Robust lightning, surge protection and self-resetting fuses provide significant improvement in reliability
Mounting options include wall, DIN rail, B or P-150 relay types
Plug-in connector wiring requires no soldering, lugs or tools
Ordering Infomation
os-Boss dcx2 Dual DC-DC Converter without mounting base (can be wall mounted) specify: os-Boss dcx2 p/n 19062-000.