
For Reference Only
Part Number | SR4D4021 |
OEMstron Part # | SR4D4021 |
Manufacturer | TE Connectivity Potter & Brumfield Relays |
Category | Power › Relays › Safety Relays |
Description | RELAY SAFETY 4PST 8A 21V |
Lifecycle | Active |
RoHS | No RoHS Information |
EDA/CAD Models | SR4D4021 PCB Footprint and Symbol |
Warehouses | USA, Europe, China, Hong Kong SAR |
Estimated Delivery | Mar 15 - Mar 20 (Choose Expedited Shipping) |
Warranty | Up to 1 year [Limited-Warranty]* |
Payment | ![]() |
Shipping | ![]() |
SR4D4021 Specifications
Part Number | SR4D4021 | |
Brand | TE Connectivity Potter & Brumfield Relays | |
Lifecycle | Active | |
RoHS | No RoHS Information | |
Product Line | Power | |
Category | Relays | |
Subcategory | Safety Relays | |
Manufacturer | TE Connectivity Potter & Brumfield Relays | |
Series | SR4, SCHRACK | |
Mounting Type | Through Hole | |
Coil Voltage | 21VDC | |
Contact Form | 4PST-2NO/2NC (2 Form A, 2 Form B) | |
Contact Rating (Current) | 8A | |
Switching Voltage | 400VAC - Max | |
Features | - | |
Termination Style | PC Pin | |
Must Operate Voltage | 16 VDC | |
Must Release Voltage | 2.1 VDC | |
Operate Time | - | |
Release Time | - | |
Operating Temperature | -25°C ~ 70°C | |
Contact Material | Silver Tin Oxide (AgSnO) |
SR4D4021 Documents

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Global Supply Chains - Reliable and Authorized Distributor Resources
Part Number | Description | Stock |
SR4D4021 D# SR4D4021 TE Connectivity |
Electromechanical Relay DPST-NO/DPST-NC 8A 21VDC 551Ohm Through Hole (Alt: SR4D4021) |
Americas - 173 |
Part Number | Description | Stock |
SR4D4021 TE Connectivity |
Relay: electromagnetic, SPST-NO x2 + SPST-NC x2, Ucoil: |
Contact Us |
Part Number | Description | Stock |
SR4D4021 D# PB1297-ND TE Connectivity |
RELAY SAFETY 4PST 8A 21V |
Temporarily Out of Stock |
Part Number | Description | Stock |
SR4D4021 TE Connectivity |
Power Relay 21VDC 8A DPST-NO/DPST-NC(40mm 13mm 16.5mm) THT RoHS: Compliant
|
51 In Stock |
Part Number | Description | Stock |
SR4D4021 D# 75AC2203 TE Connectivity |
ELECTROMECHANICAL RELAY RoHS: Not Compliant
Min Qty: 10
Container: Bulk
|
173 |
Part Number | Description | Stock |
SR4D4021 D# NS-SR4D4021 TE Connectivity |
OEM/CM ONLY |
2687 |
Part Number | Description | Stock |
SR4D4021 TE Connectivity |
Power Relay 21VDC 8A DPST-NO/DPST-NC(40mm 13mm 16.5mm) THT RoHS: Compliant
|
69 In Stock |
Part Number | Description | Stock |
SR4D4021 TE Connectivity |
OEM/CM ONLY |
189 |
Part Number | Description | Stock |
SR4D4021 D# 24336018 TE Connectivity |
Power Relay 21VDC 8A DPST-NO/DPST-NC(40mm 13mm 16.5mm) THT RoHS: Compliant
|
Americas - 170 |
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In Stock | 182 - More on Order |
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Quote Limit | No Limit |
Lead-Time | To be Confirmed |
Minimum | 1 |
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