Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

3G Electric
⌕
RFQ CartGet a QuoteSign inSign up
Siemens Control Relay: DIN-Rail & Surface Relay Mounting, 110V DC Coil Volt, 3NO/1NC - Combination DIN-Rail & Surface-Mounted Relays
SiemensCombination DIN-Rail & Surface-Mounted Relays

Siemens Control Relay: DIN-Rail & Surface Relay Mounting, 110V DC Coil Volt, 3NO/1NC

SKU 3G-OTH-37311

Brand
Siemens
Item
Control Relay: DIN-Rail & Surface Relay Mounting, 110V DC Coil Volt, 3NO/1NC
Category
Combination DIN-Rail & Surface-Mounted Relays
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineer
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Technical Specifications

Siemens
Manufacturer Part Number
3RH21311BF40
Type
3NO/1NC, 10 A
DC Coil Volt
110V
View Full Spec Sheet

Technical Documents

No technical documents available for this product.
Request documentation →
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

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

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

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.

You might also need

Burners & Combustion →Pumps & Compressors →Spare Parts →All Products →

Similar products

Matched by specification & description
SIEMENS IEC Control Relay: DIN-Rail & Surface Relay Mounting, 250V DC Coil Volt, 3NO/1NC, 10 A (MPN 3RH21311BM40). Key specifications — Brand: SIEMENS.
Siemens
SIEMENS IEC Control Relay: DIN-Rail & Surface Relay Mounting, 250V DC Coil Volt, 3NO/1NC, 10 A (MPN 3RH21311BM40). Key specifications — Brand: SIEMENS.
SIEMENS IEC Control Relay: DIN-Rail & Surface Relay Mounting, 125V DC Coil Volt, 3NO/1NC, 10 A (MPN 3RH21311BG40). Key specifications — Brand: SIEMENS.
Siemens
SIEMENS IEC Control Relay: DIN-Rail & Surface Relay Mounting, 125V DC Coil Volt, 3NO/1NC, 10 A (MPN 3RH21311BG40). Key specifications — Brand: SIEMENS.
SIEMENS IEC Control Relay: DIN-Rail & Surface Relay Mounting, 24V DC Coil Volt, 3NO/1NC, 10 A (MPN 3RH21311BB40). Key specifications — Brand: SIEMENS.
Siemens
SIEMENS IEC Control Relay: DIN-Rail & Surface Relay Mounting, 24V DC Coil Volt, 3NO/1NC, 10 A (MPN 3RH21311BB40). Key specifications — Brand: SIEMENS.
SIEMENS IEC Control Relay: DIN-Rail & Surface Relay Mounting, 120V AC Coil Volt, 3NO/1NC, 10 A (MPN 3RH21311AK60). Key specifications — Brand: SIEMENS.
Siemens
SIEMENS IEC Control Relay: DIN-Rail & Surface Relay Mounting, 120V AC Coil Volt, 3NO/1NC, 10 A (MPN 3RH21311AK60). Key specifications — Brand: SIEMENS.
SIEMENS IEC Control Relay: DIN-Rail & Surface Relay Mounting, 240V AC Coil Volt, 3NO/1NC, 10 A (MPN 3RH21311AP60). Key specifications — Brand: SIEMENS.
Siemens
SIEMENS IEC Control Relay: DIN-Rail & Surface Relay Mounting, 240V AC Coil Volt, 3NO/1NC, 10 A (MPN 3RH21311AP60). Key specifications — Brand: SIEMENS.
SIEMENS IEC Control Relay: DIN-Rail & Surface Relay Mounting, 24V AC Coil Volt, 3NO/1NC, 10 A (MPN 3RH21311AB00). Key specifications — Brand: SIEMENS.
Siemens
SIEMENS IEC Control Relay: DIN-Rail & Surface Relay Mounting, 24V AC Coil Volt, 3NO/1NC, 10 A (MPN 3RH21311AB00). Key specifications — Brand: SIEMENS.

More from Siemens

View all Siemens parts →
SIEMENS IEC Control Relay: DIN-Rail & Surface Relay Mounting, 24V DC Coil Volt, 4NO, 10 A (MPN 3RH21402FB40). Key specifications — Brand: SIEMENS.
Siemens
SIEMENS IEC Control Relay: DIN-Rail & Surface Relay Mounting, 24V DC Coil Volt, 4NO, 10 A (MPN 3RH21402FB40). Key specifications — Brand: SIEMENS.
SIEMENS IEC Control Relay: DIN-Rail & Surface Relay Mounting, 125V DC Coil Volt, 2NO/2NC, 10 A (MPN 3RH21221BG40). Key specifications — Brand: SIEMENS.
Siemens
SIEMENS IEC Control Relay: DIN-Rail & Surface Relay Mounting, 125V DC Coil Volt, 2NO/2NC, 10 A (MPN 3RH21221BG40). Key specifications — Brand: SIEMENS.
SIEMENS IEC Control Relay: DIN-Rail & Surface Relay Mounting, 24V DC Coil Volt, 4NO, 10 A (MPN 3RH21401BB40). Key specifications — Brand: SIEMENS.
Siemens
SIEMENS IEC Control Relay: DIN-Rail & Surface Relay Mounting, 24V DC Coil Volt, 4NO, 10 A (MPN 3RH21401BB40). Key specifications — Brand: SIEMENS.
SIEMENS IEC Control Relay: DIN-Rail & Surface Relay Mounting, 120V AC Coil Volt, 4NO, 10 A (MPN 3RH21401AK60). Key specifications — Brand: SIEMENS.
Siemens
SIEMENS IEC Control Relay: DIN-Rail & Surface Relay Mounting, 120V AC Coil Volt, 4NO, 10 A (MPN 3RH21401AK60). Key specifications — Brand: SIEMENS.
SIEMENS Enclosed Power Relay: DIN-Rail & Surface Mounted, 30 A Current Rating, 120V AC, DPST-NO (MPN 3TX7131-4CF13). Key specifications — attr211321: SIEMENS; attr864598: Square; attr864602: DIN Rail & Top Flange; attr864634: Quick-Connect; attr864642: 3TX7131-4CF13; attr934629: 3TX71 Series.
Siemens
SIEMENS Enclosed Power Relay: DIN-Rail & Surface Mounted, 30 A Current Rating, 120V AC, DPST-NO (MPN 3TX7131-4CF13). Key specifications — attr211321: SIEMENS; attr864598: Square; attr864602: DIN Rail & Top Flange; attr864634: Quick-Connect; attr864642: 3TX7131-4CF13; attr934629: 3TX71 Series.
SIEMENS IEC Control Relay: DIN-Rail & Surface Relay Mounting, 24V AC Coil Volt, 4NO, 10 A (MPN 3RH21401AB00). Key specifications — Brand: SIEMENS.
Siemens
SIEMENS IEC Control Relay: DIN-Rail & Surface Relay Mounting, 24V AC Coil Volt, 4NO, 10 A (MPN 3RH21401AB00). Key specifications — Brand: SIEMENS.
SIEMENS IEC Control Relay: DIN-Rail & Surface Relay Mounting, 24V AC Coil Volt, 2NO/2NC, 10 A (MPN 3RH21222AB00). Key specifications — Brand: SIEMENS.
Siemens
SIEMENS IEC Control Relay: DIN-Rail & Surface Relay Mounting, 24V AC Coil Volt, 2NO/2NC, 10 A (MPN 3RH21222AB00). Key specifications — Brand: SIEMENS.
SIEMENS IEC Control Relay: DIN-Rail & Surface Relay Mounting, 240V AC Coil Volt, 3NO/1NC, 10 A (MPN 3RH21311AN20). Key specifications — Brand: SIEMENS.
Siemens
SIEMENS IEC Control Relay: DIN-Rail & Surface Relay Mounting, 240V AC Coil Volt, 3NO/1NC, 10 A (MPN 3RH21311AN20). Key specifications — Brand: SIEMENS.