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 Compact Magnetic Motor Starter: Reversing, 3 Poles, Electronic Protection - Reversing Starters with Electronic Overloads
SiemensReversing Starters with Electronic Overloads

Siemens Compact Magnetic Motor Starter: Reversing, 3 Poles, Electronic Protection

The SIEMENS Compact Magnetic Motor Starter: Reversing (SKU 19YM55, MPN 3RM12072AA04) is a reversing starter with electronic overloads, featuring 3 poles, electronic protection, a 7 A rating, and 24V DC control…

SKU 3G-OTH-43855

Brand
Siemens
Item
Compact Magnetic Motor Starter: Reversing, 3 Poles, Electronic Protection
Category
Reversing Starters with Electronic Overloads
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
3RM12072AA04
Type
Electronic Protection, 7 A
DC
24V
Poles
3
Pilot Lights Included
LED Status Indicator
Auxiliary Contacts Included
1NO/1NC
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

Product Description

The SIEMENS Compact Magnetic Motor Starter: Reversing (SKU 19YM55, MPN 3RM12072AA04) is a reversing starter with electronic overloads, featuring 3 poles, electronic protection, a 7 A rating, and 24V DC control voltage. It includes an LED status indicator and 1NO/1NC auxiliary contacts.

Frequently Asked Questions

What is the SIEMENS 3RM12072AA04 reversing starter used for?

The SIEMENS 3RM12072AA04 is a compact magnetic motor starter used for reversing the direction of three-phase motors in industrial applications such as conveyors, pumps, and fans. It integrates electronic overload protection and an LED status indicator for reliable motor control.

What are the specifications of the SIEMENS 3RM12072AA04?

The SIEMENS 3RM12072AA04 is a reversing starter with 3 poles, electronic protection, a 7 A current rating, and 24V DC control voltage. It includes an LED status indicator and 1NO/1NC auxiliary contacts. The MPN is 3RM12072AA04 and SKU is 19YM55.

Where to buy the SIEMENS 3RM12072AA04 worldwide?

You can source the SIEMENS 3RM12072AA04 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 3RM12072AA04 reversing starter?

Mount the starter on a DIN rail or panel, connect the 24V DC control voltage to the coil terminals, and wire the motor leads to the output terminals. Set the electronic overload relay to the motor's full-load current. Always follow local electrical codes and the SIEMENS manual.

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 reversing starters with electronic overloads. 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 Compact Magnetic Motor Starter: Reversing, 3 Poles, Electronic Protection, 7 A, 110-230V AC (MPN 3RM12071AA14). Key specifications — Brand: SIEMENS; Pilot Lights Included: LED Status Indicator; Auxiliary Contacts Included: 1NO/1NC.
Siemens
SIEMENS Compact Magnetic Motor Starter: Reversing, 3 Poles, Electronic Protection, 7 A, 110-230V AC (MPN 3RM12071AA14). Key specifications — Brand: SIEMENS; Pilot Lights Included: LED Status Indicator; Auxiliary Contacts Included: 1NO/1NC.
SIEMENS Compact Magnetic Motor Starter: Reversing, 3 Poles, Electronic Protection, 7 A, 24V DC (MPN 3RM12071AA04). Key specifications — Brand: SIEMENS; Pilot Lights Included: LED Status Indicator; Auxiliary Contacts Included: 1NO/1NC.
Siemens
SIEMENS Compact Magnetic Motor Starter: Reversing, 3 Poles, Electronic Protection, 7 A, 24V DC (MPN 3RM12071AA04). Key specifications — Brand: SIEMENS; Pilot Lights Included: LED Status Indicator; Auxiliary Contacts Included: 1NO/1NC.
SIEMENS Compact Magnetic Motor Starter: Reversing, 3 Poles, Electronic Protection, 2 A, 24V DC (MPN 3RM12021AA04). Key specifications — Brand: SIEMENS; Pilot Lights Included: LED Status Indicator; Auxiliary Contacts Included: 1NO/1NC.
Siemens
SIEMENS Compact Magnetic Motor Starter: Reversing, 3 Poles, Electronic Protection, 2 A, 24V DC (MPN 3RM12021AA04). Key specifications — Brand: SIEMENS; Pilot Lights Included: LED Status Indicator; Auxiliary Contacts Included: 1NO/1NC.
SIEMENS Compact Magnetic Motor Starter: Reversing, 3 Poles, Electronic Protection, 2 A, 24V DC (MPN 3RM12022AA04). Key specifications — Brand: SIEMENS; Pilot Lights Included: LED Status Indicator; Auxiliary Contacts Included: 1NO/1NC.
Siemens
SIEMENS Compact Magnetic Motor Starter: Reversing, 3 Poles, Electronic Protection, 2 A, 24V DC (MPN 3RM12022AA04). Key specifications — Brand: SIEMENS; Pilot Lights Included: LED Status Indicator; Auxiliary Contacts Included: 1NO/1NC.
SIEMENS Compact Magnetic Motor Starter: Reversing, 3 Poles, Electronic Protection, 2 A, 110-230V AC (MPN 3RM12022AA14). Key specifications — Brand: SIEMENS; Pilot Lights Included: LED Status Indicator; Auxiliary Contacts Included: 1NO/1NC.
Siemens
SIEMENS Compact Magnetic Motor Starter: Reversing, 3 Poles, Electronic Protection, 2 A, 110-230V AC (MPN 3RM12022AA14). Key specifications — Brand: SIEMENS; Pilot Lights Included: LED Status Indicator; Auxiliary Contacts Included: 1NO/1NC.
SIEMENS Compact Magnetic Motor Starter: Reversing, 3 Poles, Electronic Protection, 0.5 A (MPN 3RM12011AA14). Key specifications — Brand: SIEMENS; Pilot Lights Included: LED Status Indicator; Auxiliary Contacts Included: 1NO/1NC.
Siemens
SIEMENS Compact Magnetic Motor Starter: Reversing, 3 Poles, Electronic Protection, 0.5 A (MPN 3RM12011AA14). Key specifications — Brand: SIEMENS; Pilot Lights Included: LED Status Indicator; Auxiliary Contacts Included: 1NO/1NC.

More from Siemens

View all Siemens parts →
SIEMENS IEC Magnetic Motor Starter: Reversing, 3 Poles, Electronic Protection, 1.2 A, 110-240V AC/DC (MPN 3RA6250-1BP32). Key specifications — Brand: SIEMENS; Pilot Lights Included: None; Auxiliary Contacts Included: 2NO.
Siemens
SIEMENS IEC Magnetic Motor Starter: Reversing, 3 Poles, Electronic Protection, 1.2 A, 110-240V AC/DC (MPN 3RA6250-1BP32). Key specifications — Brand: SIEMENS; Pilot Lights Included: None; Auxiliary Contacts Included: 2NO.
SIEMENS IEC Magnetic Motor Starter: Non-Reversing, 3 Poles, Electronic Protection, 0.4 A (MPN 3RA6120-1AP32). Key specifications — Brand: SIEMENS; Pilot Lights Included: None; Auxiliary Contacts Included: 1NO/1NC.
Siemens
SIEMENS IEC Magnetic Motor Starter: Non-Reversing, 3 Poles, Electronic Protection, 0.4 A (MPN 3RA6120-1AP32). Key specifications — Brand: SIEMENS; Pilot Lights Included: None; Auxiliary Contacts Included: 1NO/1NC.
SIEMENS NEMA Magnetic Motor Starter: Reversing, 3 Poles, NEMA Size 0, 18 A, 240V AC Coil (MPN 22CUD32AG). Key specifications — Brand: SIEMENS; Auxiliary Contact Form: 1NO; Coil Voltage: 190-220/220-240V AC; Phase: Three; Terminal Connection Type: Screw Terminals; Auxiliary Contacts Included: 1NO; Signaling Features: Pilot Light; Thermal Units Required: None (Not Applicable to Electronic Overloads).
Siemens
SIEMENS NEMA Magnetic Motor Starter: Reversing, 3 Poles, NEMA Size 0, 18 A, 240V AC Coil (MPN 22CUD32AG). Key specifications — Brand: SIEMENS; Auxiliary Contact Form: 1NO; Coil Voltage: 190-220/220-240V AC; Phase: Three; Terminal Connection Type: Screw Terminals; Auxiliary Contacts Included: 1NO; Signaling Features: Pilot Light; Thermal Units Required: None (Not Applicable to Electronic Overloads).
SIEMENS IEC Magnetic Motor Starter: Non-Reversing, 3 Poles, Electronic Protection, 12 A, 24V AC/DC (MPN 3RA6120-1DB32). Key specifications — Brand: SIEMENS; Pilot Lights Included: None; Auxiliary Contacts Included: 1NO/1NC.
Siemens
SIEMENS IEC Magnetic Motor Starter: Non-Reversing, 3 Poles, Electronic Protection, 12 A, 24V AC/DC (MPN 3RA6120-1DB32). Key specifications — Brand: SIEMENS; Pilot Lights Included: None; Auxiliary Contacts Included: 1NO/1NC.
SIEMENS Compact Magnetic Motor Starter: Reversing, 3 Poles, Electronic Protection, 7 A, 110-230V AC (MPN 3RM12072AA14). Key specifications — Brand: SIEMENS; Pilot Lights Included: LED Status Indicator; Auxiliary Contacts Included: 1NO/1NC.
Siemens
SIEMENS Compact Magnetic Motor Starter: Reversing, 3 Poles, Electronic Protection, 7 A, 110-230V AC (MPN 3RM12072AA14). Key specifications — Brand: SIEMENS; Pilot Lights Included: LED Status Indicator; Auxiliary Contacts Included: 1NO/1NC.
SIEMENS NEMA Magnetic Motor Starter: Reversing, 3 Poles, NEMA Size 0, 18 A, 120V AC Coil (MPN 22CUC32AF). Key specifications — Brand: SIEMENS; Auxiliary Contact Form: 1NO; Coil Voltage: 110/120V AC; Phase: Three; Terminal Connection Type: Screw Terminals; Auxiliary Contacts Included: 1NO; Signaling Features: Pilot Light; Thermal Units Required: None (Not Applicable to Electronic Overloads).
Siemens
SIEMENS NEMA Magnetic Motor Starter: Reversing, 3 Poles, NEMA Size 0, 18 A, 120V AC Coil (MPN 22CUC32AF). Key specifications — Brand: SIEMENS; Auxiliary Contact Form: 1NO; Coil Voltage: 110/120V AC; Phase: Three; Terminal Connection Type: Screw Terminals; Auxiliary Contacts Included: 1NO; Signaling Features: Pilot Light; Thermal Units Required: None (Not Applicable to Electronic Overloads).
SIEMENS NEMA Magnetic Motor Starter: Reversing, 3 Poles, NEMA Size 1, 27 A, 208V AC Coil (MPN 22DUE32AD). Key specifications — Brand: SIEMENS; Auxiliary Contact Form: 1NO; Coil Voltage: 208V AC; Phase: Three; Terminal Connection Type: Screw Terminals; Auxiliary Contacts Included: 1NO; Signaling Features: Pilot Light; Thermal Units Required: None (Not Applicable to Electronic Overloads).
Siemens
SIEMENS NEMA Magnetic Motor Starter: Reversing, 3 Poles, NEMA Size 1, 27 A, 208V AC Coil (MPN 22DUE32AD). Key specifications — Brand: SIEMENS; Auxiliary Contact Form: 1NO; Coil Voltage: 208V AC; Phase: Three; Terminal Connection Type: Screw Terminals; Auxiliary Contacts Included: 1NO; Signaling Features: Pilot Light; Thermal Units Required: None (Not Applicable to Electronic Overloads).
SIEMENS NEMA Magnetic Motor Starter: Reversing, 3 Poles, NEMA Size 0, 18 A, 480V AC Coil (MPN 22CUB32AH). Key specifications — Brand: SIEMENS; Auxiliary Contact Form: 1NO; Coil Voltage: 380-440/440-480V AC; Phase: Three; Terminal Connection Type: Screw Terminals; Auxiliary Contacts Included: 1NO; Signaling Features: Pilot Light; Thermal Units Required: None (Not Applicable to Electronic Overloads).
Siemens
SIEMENS NEMA Magnetic Motor Starter: Reversing, 3 Poles, NEMA Size 0, 18 A, 480V AC Coil (MPN 22CUB32AH). Key specifications — Brand: SIEMENS; Auxiliary Contact Form: 1NO; Coil Voltage: 380-440/440-480V AC; Phase: Three; Terminal Connection Type: Screw Terminals; Auxiliary Contacts Included: 1NO; Signaling Features: Pilot Light; Thermal Units Required: None (Not Applicable to Electronic Overloads).