Product Description
Motor Protection Relay | 0.28-32 Amp Range | Class 10 Trip | Direct Mount to WEG Contactors
Product Overview
The WEG RW27-1D three-phase thermal overload relay provides comprehensive motor protection with adjustable current settings from 0.28 to 32 amperes. Featuring built-in phase loss protection and Class 10 tripping characteristics, this overload relay prevents costly motor damage while ensuring reliable operation in demanding industrial applications.
Key Features & Benefits
Advanced Motor Protection
- Phase loss protection automatically trips when any phase is lost, preventing single-phasing damage
- Class 10 tripping provides fast protection (trips within 10 seconds at 7.2x rated current)
- Thermal overload protection guards against sustained overcurrent conditions
- Wide amperage range covers motors from fractional to 32 amp applications
Installation & Operation
- Direct mounting capability to WEG contactors (CWM9 through CWM40 series)
- Manual or automatic reset options for flexible operation
- Dual auxiliary contacts (1 NO + 1 NC) for control circuit integration
- Tool-free installation reduces setup time and labor costs
Reliability & Performance
- Proven thermal technology ensures accurate and repeatable protection
- Robust construction withstands harsh industrial environments
- Temperature compensation maintains accuracy across operating conditions
Technical Specifications
| Specification | Details |
|---|---|
| Current Range | 0.28 to 32 Amperes (field adjustable) |
| Phase Configuration | Three Phase |
| Trip Class | Class 10 (≤10 seconds at 7.2x setting) |
| Phase Loss Protection | Yes - Built-in |
| Reset Options | Manual or Automatic (field selectable) |
| Auxiliary Contacts | 1 Normally Open + 1 Normally Closed |
| Mounting | Direct mount to WEG CWM9-CWM40 contactors |
| Operating Temperature | -25°C to +60°C |
Applications
Primary Uses:
- Motor protection in industrial machinery
- HVAC equipment motor protection
- Pump and compressor applications
- Conveyor system motor protection
- Manufacturing equipment protection
- Process control applications
Compatibility & Mounting
Compatible WEG Contactors:
- CWM9, CWM12, CWM18, CWM25, CWM32, CWM40 series
- Direct bolt-on installation with no additional hardware required
- Maintains compact footprint in control panels
Why Choose WEG RW27-1D Overload Relay?
✓ Comprehensive Protection - Combines thermal overload and phase loss protection in one device
✓ Easy Installation - Direct mount design reduces installation time and costs
✓ Flexible Operation - Manual/automatic reset and dual auxiliary contacts
✓ Proven Reliability - Class 10 protection prevents costly motor damage
✓ Cost Effective - Replaces obsolete GE RT1 series overloads
✓ Wide Application Range - Covers fractional HP to 32 amp motors
Replacement Information
GE RT1 Series Replacement:
The WEG RW27-1D serves as an authorized replacement for discontinued GE RT1 series thermal overload relays, providing equivalent or superior protection with modern features and enhanced reliability.
Perfect for: Industrial motor control applications requiring reliable overload protection, phase loss detection, and easy integration with existing WEG contactor installations.
