Siemens
Siemens CFT3B250 Thermal Overload Relay
Siemens CFT3B250 Thermal Overload Relay
● In Stock
12-Mo Warranty
Same-Day Dispatch
Ships Worldwide
🎖 Veteran-Owned
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12-month warranty
All units tested
Same-day dispatch
Order by 2pm CST
Worldwide delivery
US, EU, Asia, Middle East
Veteran-owned
CAGE: 9NK75
3-Phase motor protection
250A maximum rating
Thermal overload detection
Phase loss sensitivity
Industrial durability
Product description
The Siemens CFT3B250 is a thermal overload relay designed to protect three-phase motors from damage due to overcurrent or phase loss. It features a maximum current rating of 250A and is built for industrial applications.
This overload relay is crucial for ensuring motor longevity and operational safety in manufacturing plants, material handling systems, and heavy machinery. It provides reliable protection against thermal stresses.
Stanlo Automation, a veteran-owned distributor, offers the Siemens CFT3B250 and a wide selection of industrial surplus parts. We provide competitive pricing and fast shipping to help you maintain your equipment efficiently.
Technical specifications
| Max Current | 250A |
| Type | Thermal Overload Relay |
| Poles | 3 |
| Manufacturer | Siemens |
Common applications
Motor Protection
Industrial Machinery
Manufacturing Equipment
Pump Systems
Conveyor Systems
Automation Control Panels
Compatible systems
Typically used in conjunction with Siemens contactors or other motor control devices requiring robust thermal protection for motors up to 250A.
Also known as
Siemens 250A Overload Relay
CFT3B Series Relay
Siemens Motor Protector
Replaces / compatible with
The Siemens CFT3B250 is a high-current thermal overload relay suitable for protecting motors rated up to 250A. It's designed to work with compatible Siemens contactors or as a standalone protection device.
Technical note
Expert tip
Properly set the thermal adjustment range on the CFT3B250 to match the full load current (FLA) of the motor it is protecting for optimal safety.What happens next?
1
Email confirmation
Immediate receipt acknowledgment sent to you
2
Account manager assigned
Confirms your part's spec and condition
3
Your quote delivered
Tailored to your specific requirements
Frequently asked questions
What is the primary function of the Siemens CFT3B250 thermal overload relay?
The Siemens CFT3B250 is a 250A thermal overload relay that provides essential protection for three-phase motors against overcurrent conditions and phase failures, preventing motor damage and downtime.