MAJOR MANUFACTURED PRODUCT
Railway Signal Relay Assembly
Electromagnetic relays switch electrical contacts in railway signalling circuits to control visual signals, switch machine points, and track circuit detection blocks.
Manufacturing Status: Major production line manufactured at Pithampur
Testing Protocol: Functional testing before packing and dispatch
Packaging Standard: Custom protective foam packing for shock-free transit
Applicable Requirement: Purchaser-approved drawing and applicable RDSO or Indian Railway specification
INTERNAL ARCHITECTURE
Assembly Components and Surface Finish
The relay assembly integrates precision mechanical stampings, electrical coils, and contact assemblies produced in-house.
| Assembly Part | Functional Role | Material and Surface Finish |
|---|---|---|
| Electromagnetic Coil | Generates magnetic flux required to actuate the armature and switch contacts. | Precision wound insulated copper wire, stress-relieved in vacuum annealing furnace. |
| Armature and Contacts | Mechanical switching contacts providing reliable make-and-break action for signalling circuits. | High-conductivity contact alloys mounted on precision formed spring carriers. |
| Mounting Bracket | Structural support frame securing the coil, contacts, and base plugboard connection. | Heavy-gauge stamped metal with in-house electroplated gold-yellow protective finish. |
SPECIFICATIONS & TESTING
What we check and what comes from your drawing
Manufacturing and testing are aligned directly to customer engineering drawings and purchase specifications.
| Parameter | Details |
|---|---|
| Coil resistance | Checked before dispatch. Value as per customer drawing. |
| Contact continuity | Checked before dispatch. |
| Operate and release action | Checked before dispatch. |
| Operating voltage, contact arrangement and timing | Set by the customer drawing or specification. |
| Packing | Foam-packed for safe transit. |