Texas Belting & Supply stocks 8 Siemens 3RW50 Series - IEC and definite-purpose contactors and control components for building motor-control panels - the switching and protection that starts, stops, and safeguards motor circuits. Available, with in-stock items that typically ship same-day. Call (888) 203-2358 for sizing help.
Common Applications
- Motor starter and control panels
- Branch-circuit switching and protection
- OEM control assemblies
- Replacing failed contactors and relays
Frequently Asked Questions
How do I size a contactor?
By the motor's full-load current and utilization category (AC-3 for motors). Match the coil voltage to your control circuit.
What's a definite-purpose vs IEC contactor?
Definite-purpose contactors are cost-optimized for specific loads like HVAC; IEC contactors are compact, modular, and rated by utilization category.
Do these include overload protection?
Contactors switch; pair them with a matching overload relay for motor protection. We stock both.
Selection help: Soft starter vs VFD guide · Motor controls hub
Need help selecting Siemens 3RW50 Series?
Our Houston team will spec it with you.
Call (888) 203-2358
