Siemens 7SJ5311-4EA02-1AA0/FF Numerical Protection Relay
$224.00
$530.00
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Description
Overview
The Siemens 7SJ5311-4EA02-1AA0/FF is a numerical protection relay designed for line and motor protection with control functions. It ensures fault detection and system stability in industrial power distribution systems.
Technical Specifications
Model Number: Siemens 7SJ5311-4EA02-1AA0/FF
Product Type: Numerical Protection Relay
Operating Conditions
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Operating Temperature: -25°C to +60°C
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Storage Temperature: -40°C to +70°C
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Protection Level: IP20
Monitoring Capabilities
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Operational Measured Values: Current (I), Voltage (V), Active Power (P), Reactive Power (Q), Frequency (f)
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Energy Metering Values: Active Power (Wp), Reactive Power (Wq)
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Threshold Values: P>, Q>, cos φ<
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Time Metering: Operating hours monitoring
Communication Interfaces
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IEC 870-5-103: Interface for SCADA integration
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PC Connectivity: Available via DIGSI software
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Modem Communication: Supported for remote connectivity
Hardware Features
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Auxiliary Voltage Options: 24V, 48V, 60V, 110V, 125V, 220V, 250V DC
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Local Control: Graphic display for easy interaction
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Analog Inputs: 5 current transformers, 3 voltage transformers
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Digital Inputs/Outputs: 11 binary inputs, 5 alarm relays, 4 command relays
Features
Minimum Order Quantity (MOQ)
We welcome bulk orders and have a minimum order quantity of just one unit.
Certificates and Documentation
Upon request, we can provide all necessary documentation, including Certificates of Origin/Conformance and other required export documents.
Delivery Time
For items in stock, we aim to deliver within 1-3 days after payment confirmation. Items with specified lead times will be delivered according to the quoted schedule.
Payment Methods
We accept 100% T/T (Telegraphic Transfer) payment before shipping. For items with lead times, a 30% deposit is required upfront, with the remaining 70% due before shipment. For RMB transfers, please contact us if you have an agent in China.
Warranty
We offer a standard one-year warranty on all new and original items. If you require an extended warranty, please contact us for additional cost details.
Refund and Return Policy
Your satisfaction is important to us. If you need to return an item, it must be done within 30 days of the order date. The product must be unused, unopened, and in its original packaging with all accessories included. Refunds are processed within 5-7 business days after we receive the returned item. Please note that shipping and related charges are non-refundable.
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