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ABB RXPDK21H 1MRK000844-BB Directional time-overcurrent relay Original new

ABB RXPDK21H 1MRK000844-BB Directional time-overcurrent relay Original new

Product Name:Directional time-overcurrent relay

Brand Name:ABB

Model Number:RXPDK21H 1MRK000844-BB

Country of Origin:SWEDEN

Warranty: 12 Months

Whatsapp：+86 18159889985

Email：[email protected]

Appurtenance:

abb rxpdk21h 1mrk000844 bb directional time overcurrent relay original new-1

Overview
Contact for quotation
Specifications
Description
Applications
Features
Functions
FAQ
Spares
Recommended Products

Overview

Brand Name:	ABB
Model Number:	RXPDK21H 1MRK000844-BB
Country of Origin:	SWEDEN
Packaging Details:	Original new Factory Sealed
Delivery Time:	in stock
Payment Terms:	T/T

Contact for quotation

Sales Manager:	Stella
Send an email:	[email protected]
Contact in Whatsapp:	+86 18159889985

Specifications

Parameter	Specification
Product Model	RXPDK21H
Product ID	1MRK000844-BB
Manufacturer	ABB
Product Type	Directional Time-Overcurrent Relay
Rated Current (Ir)	AC 5 A
Relay Function	Directional Overcurrent Protection
Country of Origin	Sweden
Net Weight	0.7 kg
Gross Weight	0.7 kg
Dimensions (Approx.)	150 × 100 × 120 mm
Mounting Type	Panel / Protection Relay Installation
Application Environment	Power Distribution & Protection Systems
Part Status	New
Customs Tariff Number	85364900

Description

ABB RXPDK21H (1MRK000844-BB) is a directional time-overcurrent relay engineered to provide dependable protection for medium- and high-voltage electrical networks. Designed for applications requiring accurate fault discrimination, the relay helps identify the direction of fault currents and supports selective tripping to enhance overall system reliability. With a rated current of AC 5A, it delivers stable protection performance in demanding power distribution environments.

As part of ABB's trusted protection relay portfolio, the RXPDK21H complements other protection solutions such as RXIDK, RXMSB, and REL-series devices. Its robust electromechanical design ensures long-term operational stability while minimizing maintenance requirements in critical installations.

The ABB RXPDK21H 1MRK000844-BB is widely deployed in substations, power generation facilities, industrial plants, and utility networks where dependable overcurrent protection, fault isolation, and system continuity are essential for safe operation.

Applications

Power plants: Provides feeder and generator circuit directional overcurrent protection to improve operational reliability.
Substations: Supports selective fault isolation, feeder protection, and coordinated relay schemes.
Transmission and distribution networks: Enhances system security through directional fault detection and overcurrent monitoring.
Industrial manufacturing plants: Protects critical electrical feeders supplying production equipment and automation systems.
Steel mills: Maintains dependable protection performance in electrically noisy and heavy-duty operating environments.
Oil & gas facilities: Assists in safeguarding power distribution assets and auxiliary systems.
Renewable energy installations: Supports protection coordination for wind farms, solar plants, and grid connection points.

Features

Directional time-overcurrent protection functionality
Rated operating current of AC 5A
High reliability for utility and industrial applications
Compact and rugged relay construction
Suitable for protection coordination schemes
Fast and accurate fault detection capability
Long operational service life
Easy integration into existing protection systems

Functions

Detects phase overcurrent faults
Determines fault direction for selective tripping
Improves feeder protection coordination
Supports network stability and fault isolation
Reduces unnecessary circuit interruptions
Enhances personnel and equipment safety
Assists in maintaining continuous power availability

FAQ

Q1: What is the primary function of the RXPDK21H relay?
A1: The RXPDK21H provides directional time-overcurrent protection for electrical distribution and transmission systems.

Q2: What is the rated current of the RXPDK21H?
A2: The relay is designed with a rated current (Ir) of AC 5A.

Q3: Where is the RXPDK21H commonly installed?
A3: It is widely used in substations, power plants, industrial facilities, and utility networks.

Q4: Why is directional protection important in power systems?
A4: Directional protection helps identify the fault direction, improving selectivity and preventing unnecessary tripping of healthy circuits.

Q5: Is the RXPDK21H suitable as a replacement spare part?
A5: Yes, the RXPDK21H 1MRK000844-BB is frequently used for maintenance, retrofit projects, and protection system spare-parts inventories.

Spares

3BHB022793R0001 ASE2 UDC920 AE01	3BHB022793R0001 ASE2 UD C920 AE01 ASE2UDC920AE01
3BHB020720R0002 5SHY3545L0016	3BHB020538R0001 5SHX1060H0003 3BHE024415R0101 GV C714 A101
3BHB013088R0001 5SHY3545L0010 3BHE009681R0101 GVC750 GE101	3BHB012961R0001 5SHX 2645L0002
3BHB007030R0103 UFC760 BE103	3BHB006943R0002 UNS0885A-Z, V2
3BHB006943R0001 UNS0885A-Z, V1	3BHB006449R0002 MPS-230/24/48
3BHB006449R0002 857781	3BHB006338R0101 UNS0881A-P
3BHB006338R0101 UNS0881	3BHB006338R0002 UNS0881A-P, V2
3BHB006338R0001 UNS0881A-P, V1	3BHB006338R0001 UNS0881A-P
3BHB006338R0001 UNS0881	3BHB006309R0001 UNS0882A-P, V1
3BHB006309R0001 UNS0882A-P	3BHB006208R0001 UNS0883A-P, V1
3BHB005922R0001 UNS0880A-P, V1	3BHB005922R0001 UNS0880A-P V1
3BHB005922R0001 UNS0880A-P V1	3BHB005922R0001 UNS0880A-P