
Siemens Industrial Controls 3RB3026-2QB0 Overload
The Siemens 3RB3026-2QB0 is an industrial-grade solid state overload relay designed for precise motor protection in HVACR and industrial control systems. As the 3RB30 series evolved, this unit now serves as the direct replacement for 3RB1026-2QB0, offering enhanced electronic accuracy for size S0 contactors. Featuring an adjustable current range of 6-25A and a Class 20 tripping characteristic, it is specifically engineered for loads with heavy starting conditions, ensuring reliable interruption before thermal damage occurs. Built for three-phase motor applications, the SIRIUS 3RB3026-2QB0 integrates seamlessly with 3RT202 contactors via screw-terminal main and auxiliary circuits. Its electronic sensing technology eliminates the need for external power, providing consistent protection against overload, phase failure, and phase unbalance. For technicians in the field, the manual-automatic reset and switch position indicator simplify commissioning and diagnostic workflows.
Key Benefits:- Precise Current Adjustment: Dial-in the exact motor FLA with a 6A to 25A setting range, reducing nuisance trips.
- Heavy Load Protection: Class 20 trip rating provides the necessary delay for high-inertia motor startups without compromising safety.
- Direct Mount Integration: Snap-on design for Siemens S0 contactors reduces cabinet wiring and panel footprint.
- Electronic Reliability: Solid-state internal sensing offers superior long-term stability compared to traditional bimetallic thermal overloads.
- Comprehensive Safety: Integrated protection for phase loss and asymmetry ensures the longevity of critical motor windings.
- Is the 3RB3026-2QB0 compatible with older Siemens contactors? Yes, it is the direct successor to the 3RB1026-2QB0 and fits established S0-sized 3RT units, allowing for straightforward field retrofits.
- How do I handle a trip event in the field? The unit features a manual-automatic reset selector; for automated HVAC systems, the auto-reset mode is ideal, while manual-reset provides a necessary safety check for heavy machinery.
- Does this overload require a separate power supply? No, the solid-state electronics are self-powered through the current transformers in the main circuit, simplifying overall control wiring.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Siemens Industrial Controls 3RB3026-2QB0 Overload
The Siemens 3RB3026-2QB0 is an industrial-grade solid state overload relay designed for precise motor protection in HVACR and industrial control systems. As the 3RB30 series evolved, this unit now serves as the direct replacement for 3RB1026-2QB0, offering enhanced electronic accuracy for size S0 contactors. Featuring an adjustable current range of 6-25A and a Class 20 tripping characteristic, it is specifically engineered for loads with heavy starting conditions, ensuring reliable interruption before thermal damage occurs. Built for three-phase motor applications, the SIRIUS 3RB3026-2QB0 integrates seamlessly with 3RT202 contactors via screw-terminal main and auxiliary circuits. Its electronic sensing technology eliminates the need for external power, providing consistent protection against overload, phase failure, and phase unbalance. For technicians in the field, the manual-automatic reset and switch position indicator simplify commissioning and diagnostic workflows.
Key Benefits:- Precise Current Adjustment: Dial-in the exact motor FLA with a 6A to 25A setting range, reducing nuisance trips.
- Heavy Load Protection: Class 20 trip rating provides the necessary delay for high-inertia motor startups without compromising safety.
- Direct Mount Integration: Snap-on design for Siemens S0 contactors reduces cabinet wiring and panel footprint.
- Electronic Reliability: Solid-state internal sensing offers superior long-term stability compared to traditional bimetallic thermal overloads.
- Comprehensive Safety: Integrated protection for phase loss and asymmetry ensures the longevity of critical motor windings.
- Is the 3RB3026-2QB0 compatible with older Siemens contactors? Yes, it is the direct successor to the 3RB1026-2QB0 and fits established S0-sized 3RT units, allowing for straightforward field retrofits.
- How do I handle a trip event in the field? The unit features a manual-automatic reset selector; for automated HVAC systems, the auto-reset mode is ideal, while manual-reset provides a necessary safety check for heavy machinery.
- Does this overload require a separate power supply? No, the solid-state electronics are self-powered through the current transformers in the main circuit, simplifying overall control wiring.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
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Description
The Siemens 3RB3026-2QB0 is an industrial-grade solid state overload relay designed for precise motor protection in HVACR and industrial control systems. As the 3RB30 series evolved, this unit now serves as the direct replacement for 3RB1026-2QB0, offering enhanced electronic accuracy for size S0 contactors. Featuring an adjustable current range of 6-25A and a Class 20 tripping characteristic, it is specifically engineered for loads with heavy starting conditions, ensuring reliable interruption before thermal damage occurs. Built for three-phase motor applications, the SIRIUS 3RB3026-2QB0 integrates seamlessly with 3RT202 contactors via screw-terminal main and auxiliary circuits. Its electronic sensing technology eliminates the need for external power, providing consistent protection against overload, phase failure, and phase unbalance. For technicians in the field, the manual-automatic reset and switch position indicator simplify commissioning and diagnostic workflows.
Key Benefits:- Precise Current Adjustment: Dial-in the exact motor FLA with a 6A to 25A setting range, reducing nuisance trips.
- Heavy Load Protection: Class 20 trip rating provides the necessary delay for high-inertia motor startups without compromising safety.
- Direct Mount Integration: Snap-on design for Siemens S0 contactors reduces cabinet wiring and panel footprint.
- Electronic Reliability: Solid-state internal sensing offers superior long-term stability compared to traditional bimetallic thermal overloads.
- Comprehensive Safety: Integrated protection for phase loss and asymmetry ensures the longevity of critical motor windings.
- Is the 3RB3026-2QB0 compatible with older Siemens contactors? Yes, it is the direct successor to the 3RB1026-2QB0 and fits established S0-sized 3RT units, allowing for straightforward field retrofits.
- How do I handle a trip event in the field? The unit features a manual-automatic reset selector; for automated HVAC systems, the auto-reset mode is ideal, while manual-reset provides a necessary safety check for heavy machinery.
- Does this overload require a separate power supply? No, the solid-state electronics are self-powered through the current transformers in the main circuit, simplifying overall control wiring.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.











