4463AT-48

Thermal Relay 4463AT-48 for Aircraft Electrical Protection

The 4463AT-48 thermal relay is an aviation thermal protection device designed to prevent overheating and damage of electrical equipment caused by excessive current. The unit is installed in aircraft electrical systems where protection of motors, power circuits, and auxiliary equipment is required.

4463AT-48 Thermal Relay Overload Protection Function

The 4463AT-48 thermal relay provides automatic overload protection by interrupting the electrical circuit when temperature exceeds permissible limits due to overcurrent conditions. The device ensures continuous monitoring of thermal operating conditions of electric motors and power units, contributing to operational reliability and system safety.

Operating Principle of Thermal Relay 4463AT-48

The 4463AT-48 thermal relay operates on a bimetallic principle. A temperature-sensitive bimetal element deflects under thermal load and mechanically opens the contacts once the preset threshold is reached. Depending on configuration, the relay may include manual or automatic reset capability and visual trip indication for diagnostics.

Application of 4463AT-48 Thermal Relay in Aviation Systems

The 4463AT-48 thermal relay is used in aircraft and helicopter electrical systems where thermal overload protection is mandatory. Exact trip current parameters and adjustment ranges are defined in the manufacturer’s passport and technical documentation for the specific serial number.

The product is also known under alternative designations 4463АТ-48, which refer to the same product type.

Product Type: Thermal protection relay
Function: Overload protection and automatic circuit interruption
Application / Where Used: Aircraft electrical systems
Operating Principle: Bimetallic thermal actuation
Control Mode: Automatic
Reset Type: Manual or automatic depending on modification
Indication: Visual trip indication (if equipped)
Technical Documentation: Manufacturer passport with trip current and adjustment data

All shipments are carried out from our international warehouse in Dubai (UAE), as well as from our partners’ remote warehouses.

In Stock — items available in stock at the Dubai warehouse are dispatched within 5–10 business days after receiving 100% prepayment.

Remote Stock — items available at our partners’ remote warehouses are supplied within an average of 30–45 business days after receiving 100% prepayment.

Pre-Order — made-to-order products are manufactured and delivered within an average of 45–60 business days. Payment terms: 50% advance payment to start production, with the remaining 50% paid before dispatch from the Dubai warehouse after full readiness for shipment.

Returns & Changes (Restocking Fee)
For selected items, a RESTOCKING FEE of 10% may apply in case of return, order cancellation, or changes to the order specifications. This condition applies only to certain products and is confirmed at the order approval stage.

Warranty
All products are covered by a standard 6-month warranty.
Extended warranty is available upon request and is agreed individually; it may affect the final product price.