Overview
The Siemens 3UA5200-1E overload relay is a thermal-delay protection device engineered for AC and DC motor overload control. Designed for contactor mounting, this relay operates across a 2.5–4A current range and delivers consistent, temperature-compensated protection in industrial and commercial electrical systems. Its manual reset design ensures operator control over circuit reconnection after an overload event.
Key Features
- Thermal-delay overload protection with temperature compensation
- Adjustable current range: 2.5–4A
- Direct contactor mounting for compact integration with 3TF32/33 starters
- Manual reset operation—operator must manually restore circuit after trip
- 1NO + 1NC auxiliary contacts for signaling and interlock functions
- Suitable for both AC and DC motor applications
Technical Specifications
- Current Rating: 2.5–4A adjustable
- Relay Type: Thermal-delay overload relay
- Mounting: Contactor mount (3TF32/33 compatible)
- Auxiliary Contacts: 1NO + 1NC
- Reset Mode: Manual
- Protection Function: Overload and phase-failure protection
- Nominal Voltage: 600VAC
Typical Applications
- Industrial motor control circuits requiring overload protection
- Motor starters and contactors in manufacturing facilities
- Pump, fan, and compressor motor protection
- AC and DC motor applications across commercial and industrial sectors
- Equipment retrofit and spare-parts replacement on legacy control systems
Compatibility & Replacements
The 3UA5200-1E integrates directly with Siemens 3TF32 and 3TF33 motor starters and contactors. It is part of the broader Siemens 3UA series, which includes overload relays rated from 0.1A to 400A, allowing flexibility in motor protection design. When sourcing this used relay, verify mechanical condition and contact integrity before installation. Compatible with legacy Siemens motor control systems across multiple industrial facilities.
