ABB REF620E_F NBFNAAAANDA1BNN1X – Advanced Protection Relay Module

ABB REF620E_F_NBFNAAAANDA1BNN1X – Precision Protection for Critical Systems

ABB’s REF620E_F protection relay series has become indispensable in modern industrial power systems. This particular model with code NBFNAAAANDA1BNN1X serves as a dedicated protection solution for medium-voltage applications, combining precision measurement with fast fault response capabilities.

Technical Specifications	Details
Brand	ABB
Model	REF620E_F
Submodel	NBFNAAAANDA1BNN1X
Voltage Range	120V – 750V AC
Current Rating	10A nominal
Protection Functions	Overcurrent, Earth Fault, Phase Unbalance
Certifications	CE, UL, IEC 61850-7-3

Engineered for demanding environments, this relay operates reliably between -40°C to +70°C while maintaining measurement accuracy within ±0.5%. Its compact 170x120x90mm chassis with 2.5kg weight allows easy integration into existing switchgear panels. We’ve seen this model perform exceptionally well in both substation protection and industrial plant applications where voltage fluctuations are common.

In real-world deployments, this device has proven particularly effective in monitoring three-phase systems for asymmetrical faults. One customer in the petrochemical sector reported a 40% reduction in unplanned downtime after implementing these relays across their motor control centers. The module’s programmable trip characteristics allow customization for specific protection requirements, making it adaptable to various system configurations.

Common Applications & Related Models

• Medium-voltage transformer protection
• Industrial motor protection circuits
• Substation feeder monitoring
• Power generation system interconnection

Our inventory includes other ABB protection relays like REF615, REF620, and REF630 series units. We frequently handle related components such as:

• ABB AC10272001R0101
• ABB 5SHY3545L0010
• ABB 3BHB013088R0001

Our Commitment to Quality

All products come with our standard 1-year warranty covering manufacturing defects. We maintain global inventory across 16 regional warehouses, ensuring typical delivery times under 72 hours for in-stock items. For urgent requirements, we can often arrange same-day dispatch from our nearest distribution center.