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Overview
The ABB REJ603BBB10NN3XC is a self-powered feeder protection relay that is used to protect secondary distribution networks in utilities and industries. It is a numerical relay, which means that it uses digital signal processing to perform its protection functions. This makes it more accurate and reliable than traditional electromechanical relays.

Features
- Three-phase overcurrent protection
- Earth-fault protection
- Transformer inrush protection
- Remote trip
- Low energy trip output
- Self-powered, does not require an external power supply
- Available with a variety of current transformer (CT) ratings
- Can be configured to use either internal or external earth-fault measurement
- Built-in self-supervision system
- Compatible with a variety of communication protocols
Technical Specifications
- Rated frequency: 50/60 Hz ± 5 Hz
-
Phase inputs:
- Nominal primary current range: 8 - 28 A
-
Thermal withstand capability:
- Continuously: 2.5 x Ismax
- For 1 s: 25 kA primary current
- For 3 s: 20 kA primary current
-
Dynamic current withstand:
- Half-wave value: 62.5 kA primary current
-
Earth input:
- Rated current, In: 1 A
-
Thermal withstand capability:
- Continuously: 4 A
- For 1 s: 100 A
-
Dynamic current withstand:
- Half-wave value: 250 A
-
Binary inputs:
- Rated voltage: 24 - 240 V AC/DC
- Operating range: -15%…+10% for AC, -30% … +20% for DC
- Current drain: 2...15 mA
- Power consumption: < 0.8 W
- Threshold voltage: 13 V AC/17 V DC
-
Impulse voltage trip output:
- Rated output voltage: 12 V
- Pulse time: 30 ms
- Energy: 50 mJ
Applications
The ABB REJ603BBB10NN3XC can be used in a variety of applications, including:
Secondary distribution networks in utilities and industries
- Substations
- Power plants
- Data centers
- Critical infrastructure It can also be used to protect a variety of equipment, including:
- Transformers
- Motors
- Generators
- Switchgear
- Cables
MORE:REJ603HMI_pg_1MDS07208-YN_ENc
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Payment: T/T, Western Union.
Shipping port: Xiamen.
Lead time: Typically 1–3 working days after payment confirmation (subject to stock).
Worldwide delivery: We ship industrial automation parts to customers around the world. Freight is quoted with your RFQ.
F.A.Q.
Common questions about quotes, shipping, warranty and returnsClick Request a Quote on the product page and send us the part number, required quantity, and destination country. Our sales team will reply with current availability, pricing, and estimated delivery time.
In-stock items are normally prepared after payment and order confirmation. Most orders are dispatched from our warehouse in China, although the shipping location may vary depending on current stock.
Yes. We ship industrial automation parts to customers worldwide. Shipping cost and transit time depend on the destination, package weight, product size, and local import requirements.
We commonly use DHL, FedEx, UPS, and other international courier services. The carrier can be selected according to the destination, delivery speed, shipment size, and customer requirements.
Our products are generally covered by a 12-month warranty. Eligible products may also be returned under our 30-day refund policy. Please contact our team before returning any item to confirm the applicable terms and return instructions.
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