WEG DWE-3 Motor Protection Relay 110 V AC Supply Voltage

The WEG DWE-3-S3-MT-110V is the 110 V AC supply voltage variant of the DWE-3 electronic motor protection relay, designed for use in MCCs and switchgear panels supplied from 110 V AC UPS or instrument power supplies. In Saudi Aramco facilities and SABIC petrochemical plants, the 110 V AC control voltage standard is widely specified for MCC and switchgear control circuits per SAES-P-100 and IEC 60204-1 requirements for control circuit voltage. Many Saudi industrial facilities use 110 V AC as the standard MCC control voltage derived from the site 110 V AC UPS (Uninterruptible Power Supply) system, ensuring continuous motor control and protection relay operation during 380 V/415 V supply interruptions.

110 V AC Control Voltage Standard in Saudi Arabia

Saudi Aramco's General Instruction GI-2.100 and SAES-P-100 specify control circuit voltages for MCCs. The 110 V AC standard is used in Aramco's established facilities throughout the Eastern Province and is replicated in SABIC's co-located petrochemical complexes at Jubail Industrial City. New construction projects including Jizan Economic City Refinery and Fadhili Gas Program MCC packages specify 110 V AC control circuits, making the DWE-3-S3-MT-110V the correct supply voltage variant for these projects. Razz Middle East carries both 24 V DC and 110 V AC variants of WEG DWE-3 to satisfy the different control voltage preferences of Saudi project specifications.

Full Protection Functions

The DWE-3-S3-MT-110V provides identical protection functions to the standard DWE-3: Class 10 thermal overload, phase unbalance, phase loss, PTC thermistor input, locked rotor, excessive starting time, restart inhibit (thermal memory), and Modbus RTU RS-485 communication. Only the supply voltage input differs from the standard variant. Saudi project engineers can specify the -110V suffix when preparing material requisitions, ensuring the correct supply voltage variant is delivered for 110 V AC controlled MCCs.