Adjustable Trip Curves
Dial in thermal and magnetic trip settings to match motor FLA values and service factors while maintaining coordination.
Overload & Motor Protection
MPW breakers, RW overload relays, and RW-E electronic protection keep motors safe from overload, phase loss, and short circuits.
Build coordinated starter packages using adjustable thermal-magnetic breakers or precise electronic overload relays. WEG protection devices deliver IEC Type 1 and Type 2 coordination, UL approvals, and plug-in accessories that simplify panel wiring. Gross Automation engineers size trip settings, select accessories, and document protective device settings.
Key Differentiators
Integrated Accessories
Snap-on auxiliary contacts, shunt trips, and alarm indicators provide remote monitoring without complex wiring.
Electronic Protection
RW-E relays deliver phase imbalance, jam detection, and ground fault options with digital displays and Modbus communication.
Global Compliance
UL, cUL, CE, and CCC certifications streamline global panel builds and export projects.
Protection Portfolio
MPW Motor Protection Breakers
- Up to 100 kA short-circuit capacity with adjustable thermal and magnetic trip settings.
- Direct-on-line starters with integrated disconnecting means and handle lockout capability.
- Accessories including auxiliary contacts, shunt trips, and undervoltage releases.
- Mounting adapters for DIN rail or panel installations with minimal footprint.
Thermal Overload Relays
- RW thermal overloads with selectable trip class 10, 20, or 30 and manual/automatic reset.
- Direct mounting under CW contactors or separate DIN rail mounting for remote panels.
- Phase-loss detection and ambient compensation maintain protection accuracy.
- Terminal covers and test buttons support commissioning and maintenance.
Electronic Overload & Relays
- RW-E relays with LCD displays, fieldbus communication, and extensive alarm outputs.
- Protection functions covering ground fault, jam detection, stall, and temperature monitoring.
- RTW timing relays and monitoring modules for voltage, phase sequence, and current imbalance.
- Remote trip indication via auxiliary contacts and panel-mounted pilot lights.
Protection Platforms We Deploy
MPW Motor Protection Breakers
Thermal-magnetic breakers 0.1–100 A with adjustable trip curves and high short-circuit ratings.
- Compact 45 mm width with DIN-rail or panel adapters.
- Padlockable rotary handles plus door-coupling kits for enclosed starters.
- Auxiliary contacts, shunt trips, and undervoltage releases install in seconds.
RW Thermal Overload Relays
Bi-metal overloads that mount directly to CW contactors or DIN rail for Class 10/20/30 protection.
- Selectable manual or automatic reset with status indicators for diagnostics.
- Phase-loss sensitivity and ambient compensation maintain accuracy.
- Includes test button and stop/reset front cover for easy commissioning.
RW-E Electronic Relays
Microprocessor-based overload protection with Modbus, alarms, and programmable trip curves.
- Supports ground fault, jam, stall, and phase imbalance monitoring.
- LCD interface for real-time current display and parameter setup.
- Remote reset and alarm outputs integrate with PLC500 diagnostics.
Motor Protection Specification Matrix
| Device | Current Range | Protection Functions | Application Notes |
|---|---|---|---|
| MPW40/50 Breakers | 0.1–32 A adjustable | Thermal overload, short-circuit up to 50 kA | Ideal for IEC Type E combination starters with CW contactors |
| MPW100/160 Breakers | 25–100 A adjustable | Thermal overload, short-circuit up to 65 kA | Rotary handle options for MCC buckets and large motor loads |
| RW Thermal Overloads | 0.1–140 A (frame dependent) | Class 10/20/30, phase loss detection | Mounts directly under CW contactors or remote DIN rail adapters |
| RW-E Electronic Relays | 0.8–840 A via CT modules | Thermal overload, ground fault, jam, underload, imbalance | Programmable trip curves, Modbus RTU, and configurable digital outputs |
Protection Use Cases
Pump Skids & Water Systems
Coordinate MPW breakers with CFW700 drives and bypass contactors to meet municipal specifications.
Material Handling
Protect conveyor and crane motors with RW-E electronic relays that provide jam detection and remote reset.
Process Industries
Integrate overload data into PLC500 diagnostics for chemical, food, and beverage production lines.
OEM Starter Panels
Bundle MPW breakers and overloads with CW contactors for UL508A listed starter panels ready for shipment.
Protection Engineering Services
Trip Setting Reviews
We validate overload settings against motor FLA, service factor, and ambient conditions.
Documentation Packages
Deliver setting sheets, one-line diagrams, and coordination records for inspections.
Remote Monitoring Integration
Connect RW-E relays to PLC500 dashboards for alarm logging and predictive maintenance.
Deep Dive: MPW Motor Protection
Take a closer look at MPW breakers and RW protection on the dedicated product page with sizing tips, coordination notes, and service deliverables.
- Adjustment ranges for MPW16, MPW32, and MPW100 frames with trip curve context.
- Accessory reference covering shunt trips, undervoltage releases, and rotary handles.
- Starter package checklists linking MPW protection with CW contactors and RW overloads.
Highlights
- Selection snapshot summarizing ranges, breaking capacity, and applications.
- Engineering deliverables for settings worksheets, wiring kits, and maintenance guides.
- Consultation request for validation of coordination and field commissioning.
Documentation & Settings
- MPW motor protection breaker catalog with frame ratings and accessory options.
- Thermal overload relay adjustment charts with trip class guidance.
- RW-E relay programming manual with Modbus register mapping.
- Short-circuit coordination tables for MPW + CW combinations.
Application Engineering
Need help selecting overload trip settings or matching protective devices to drives? Our engineers provide parameter worksheets, protective device studies, and commissioning support.
Schedule ReviewProtect Motors with Confidence
Share motor data, application details, and short-circuit ratings to receive a fully coordinated protection package.
Talk with an Engineer