WEG RW Thermal Overload Relay (RW17/RW27/RW67)

The WEG RW series Thermal Overload Relay family covers a broad current protection range from 0.1 A to 80 A across three frame sizes — RW17 (0.1–25 A), RW27 (1–40 A), and RW67 (10–80 A) — providing IEC 60947-4-1 and 60947-5-1 compliant motor thermal protection for the full spectrum of industrial motor ratings used across Saudi Arabia. These bimetallic thermal relays combine precise trip characteristic accuracy with robust construction, providing reliable overload protection that is independent of supply voltage and resistant to the ambient temperature variations common in Saudi electrical installations. The RW relays' class 10A trip characteristic is optimised for standard induction motors, and the adjustable current setting dial allows continuous calibration to the actual motor FLA without needing to order a different relay frame.

The RW17 is designed for direct mounting on WEG CWC contactors without inter-wiring — the relay snaps onto the contactor's base, creating a mechanically and electrically integrated motor starter unit that reduces assembly time and panel space. The RW27 and RW67 are panel-mount designs for larger contactors and standalone applications. All three models include a manual/automatic reset selector, a trip indicator flag, test and reset pushbuttons, and a NC/NO auxiliary contact output for wiring to the control circuit. Phase-loss sensitivity is built in: a single-phase condition causes the relay to trip within 30 seconds regardless of the remaining two-phase current level, protecting motors from the single-phasing failure mode that is a common cause of winding burnout in Saudi pump stations with ageing switchgear.

Electrical contractors, panel builders, and maintenance engineers across Saudi Arabia favour the WEG RW range for its combination of IEC-type test certification, competitive pricing, and direct mounting compatibility with WEG CWC contactors. For facilities maintaining large fleets of motor starters — NWC pump stations, SABIC plant motor control centres, HVAC mechanical rooms in commercial high-rises — the ability to source contactors and overload relays from a single distributor (Razz Middle East) with matched frame compatibility simplifies procurement and reduces spares inventory complexity. The relays are rated to 55°C ambient, matching the CWC contactor range.

Razz Middle East stocks the RW17, RW27, and RW67 across all standard current setting ranges for immediate delivery across Saudi Arabia. Our technical team can assist with relay selection and current setting calculation based on motor FLA and service factor data, and we stock matching CWC contactors to provide complete starter assemblies. Pricing is in SAR with same-day quotation. Volume pricing is available for panel builder accounts with regular orders.