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Siemens 3RH21221AP00 IEC Control Relay - Combination DIN-Rail & Surface-Mounted Relays
SiemensCombination DIN-Rail & Surface-Mounted Relays

Siemens 3RH21221AP00 IEC Control Relay

The SIEMENS IEC Control Relay is a combination DIN-rail and surface-mounted relay (MPN 3RH21221AP00) with a 230V AC coil voltage and 2NO/2NC contacts rated at 10 A. 3G Electric interprets your demand for this Siemens…

SKU 3G-OTH-37251

Brand
Siemens
Item
3RH21221AP00 IEC Control Relay
Part Number
3RH21221AP00
Category
Combination DIN-Rail & Surface-Mounted Relays
Available to Order
Also known as:3RH21221AP00Siemens
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Technical specs
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Local availability & support

Delivery
Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Compliance & shipping

Hazardous material
Not classified as hazardous
California Prop 65 warning
No warning recorded
Licence required
No licence required
Safety Data Sheet
Not available
Special shipping
Ships under standard freight

Technical Specifications

Siemens
Manufacturer Part Number
3RH21221AP00
Series
3RH21 Control Relays
Type
2NO/2NC, 10 A
UNSPSC
39121535
Features
Finger Safe
Frequency
50/60 Hz
IP Rating
IP20
Standards
RoHS Compliant; WEEE (2012/19/EU)
Body Depth
2.87 in
Body Width
1.77 in
Body Height
2.26 in
Relay Style
IEC
AC Coil Volt
230V
Catalog Page
N/A
Contact Form
2NO/2NC
Input Voltage
230V AC
Response Time
10 to 15 msec (Arcing Time); 4 to 15 msec (Opening Delay); 8 to 33 msec (Closing Delay)
Current Rating
10 A Current Rating Refers to the maximum amount of current an electrical device is designed to handle continuously without deteriorating or causing damage to downstream equipment.
Relay Frame Size
Standard
Country of Origin
Germany (subject to change)
Number of Terminals
14
Relay Mounting Style
DIN-Rail & Surface
Electrical Connection Type
Screw
Maximum Operating Temperature
140 °F
Minimum Operating Temperature
-13 °F

Technical Documents

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Siemens Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The SIEMENS IEC Control Relay is a combination DIN-rail and surface-mounted relay (MPN 3RH21221AP00) with a 230V AC coil voltage and 2NO/2NC contacts rated at 10 A. 3G Electric interprets your demand for this Siemens control component, sourcing it across our 14 industrial departments and backing it with specialist depth in controls.

Frequently Asked Questions

What is the SIEMENS 3RH21221AP00 control relay used for?

The SIEMENS 3RH21221AP00 is an IEC control relay used for switching and controlling industrial circuits. It is commonly applied in motor control centers, conveyor systems, and automation panels where reliable switching of loads up to 10 A is required.

What are the specifications of the SIEMENS 3RH21221AP00 control relay?

The SIEMENS 3RH21221AP00 is a combination DIN-rail and surface-mounted relay with a 230V AC coil voltage. It features 2 normally open and 2 normally closed contacts rated at 10 A. The MPN is 3RH21221AP00, and it is part of the SIEMENS IEC control relay family.

Where to buy the SIEMENS 3RH21221AP00 control relay worldwide?

You can source the SIEMENS 3RH21221AP00 control relay through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time.

How to install the SIEMENS 3RH21221AP00 control relay?

Install the SIEMENS 3RH21221AP00 by snapping it onto a DIN rail or mounting it on a surface using the provided slots. Ensure the coil voltage matches your 230V AC supply. Wire the contacts according to your control schematic, and verify that the load does not exceed 10 A.

Used in

Common applications for Siemens
District cooling plants — LME73 + RWF55 for condenser-water modulation
Inflight catering and food-processing steam boilers — LMG22 with SQN90 air-fuel cross-damper
Hospital steam-plant redundancy — LME41 with QRA2 UV flame detection for dual-fuel boilers
Semiconductor fab process heat — LME23 and SKP55 gas valves on hot-oil heater skids
Container-terminal reefer-deck heating — LMG22 retrofit onto legacy burner racks
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Siemens Products

3G Electric supplies Siemens combination din-rail & surface-mounted relays. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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