SIEMENS 7SR1053-2LA21-2EA0/BB RELAY

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SIEMENS 7SR1053-2LA21-2EA0/BB RELAY Specification

Cooling Method
Natural air cooled

Connector Type
Plug-in screw terminal

Operating Temperature
-10C to +55C

Output Type
Relay Output (Trip, Alarm)

Noise Level
<40 dB

Current Range
1A/5A CT (Selectable)

Power Supply
Auxiliary powered, 24-250 V DC / 48-240 V AC

Features
Multiple protection functions, LCD display, Event Records, Disturbance Recorder, Configurable I/Os

Output Current
Up to 5A (Relay contact)

Rated Current
Up to 5A (per relay contact)

Application
Feeder, Transformer, Motor, and Generator protection

Working Temperature
-10C to +55C

Phase
3 Phase / 1 Phase

Product Type
Protection Relay

Output Frequency
50/60 Hz compatible

Input Voltage
24-250 V DC / 48-240 V AC

Voltage Protection
Yes

Material
Polycarbonate/ABS housing

Storage Temperature
-25C to +70C

Weight
Approx. 1.2 kg

Mounting Type
Panel Mount

Communication Port
RS485, IEC 60870-5-103, Modbus, DNP3

Insulation Category
CAT III

Display
Backlit LCD display

Protection Functions
Overcurrent, Earth Fault, Under/Over Voltage, Frequency Protection, Broken Conductor, Negative Sequence, Cold Load Pickup, Inrush Restraint

Event Record
High capacity, up to 500 events

Disturbance Recorder
Yes, with waveform capture capability

Part Number
7SR1053-2LA21-2EA0/BB

Relay Operating Time
<20 ms (typical)

Dimensions
220 mm x 177 mm x 80 mm (approx.)

Relay Contacts
6 assignable output relays

About SIEMENS 7SR1053-2LA21-2EA0/BB RELAY

Utilise offer on the trending SIEMENS 7SR1053-2LA21-2EA0/BB RELAY, a famed solution for prime protection of feeders, transformers, motors, and generators. Benefit from advanced multi-functionality including overcurrent, earth fault, under/over voltage, and frequency protection, all in a glorious polycarbonate/ABS housing. Achieve significant savings with a backlit LCD, high event storage, and versatile connectivity via RS485, IEC 60870-5-103, Modbus, and DNP3. Quick operating time, configurable I/Os, and CAT III insulation ensure reliable output, making it indispensable for modern electrical networks.

Robust Design for Diverse Commercial Applications

The SIEMENS 7SR1053-2LA21-2EA0/BB RELAY utilises a panel mount design crafted from durable polycarbonate/ABS, ideally suited for both single-phase and three-phase protection requirements. Its extensive material resilience and consistent output make it a preferred choice for commercial settings, including power distribution in factories, utilities, and industrial automation. Users gain from easy monitoring and management through its intuitive backlit LCD, ensuring safe, efficient operations in demanding environments.

Sample Availability and Flexible Payment Options

Samples of the SIEMENS 7SR1053-2LA21-2EA0/BB RELAY can be requested for evaluation purposes, subject to supplier sample policy and availability. Estimate delivery timelines are promptly communicated upon order confirmation, with shipment handled by trusted logistics partners to ensure swift fulfillment. Flexible payment terms are offered to accommodate a variety of procurement needs, streamlining transactions and supporting businesses in managing their purchasing process effectively.

FAQs of SIEMENS 7SR1053-2LA21-2EA0/BB RELAY:

Q: How does the SIEMENS 7SR1053-2LA21-2EA0/BB RELAY enhance protection in commercial settings?

A: This relay integrates multiple protection functions, including overcurrent, earth fault, and voltage anomalies, safeguarding vital electrical assets like feeders and transformers from faults and operational hazards.

Q: What are the main benefits of the configurable I/Os and high event record capacity?

A: Configurable I/Os allow customization to specific installation requirements, while the capacity to store up to 500 events ensures comprehensive operational tracking and diagnostic capabilities.

Q: Where is the SIEMENS 7SR1053-2LA21-2EA0/BB RELAY typically installed?

A: It is designed for panel mounting and is commonly installed in electrical control rooms, switchgear panels, and industrial distribution boards.

Q: When can I expect delivery after placing an order for a sample?

A: Delivery estimates are provided based on supplier inventory and selection criteria, with most shipments processed promptly for minimal waiting time.

Q: How is communication with other systems achieved using this relay?

A: The relay offers multiple communication protocols, such as RS485, IEC 60870-5-103, Modbus, and DNP3, enabling seamless integration with modern supervisory control and data acquisition (SCADA) systems.