Home

Explore

View Cart

Deals

Saved

Suggested searches

Plant-based protein powders
Vegan leather handbags
Bedroom decor
Waterproof jackets
Hoodies

Learn more about how we use your data to personalize your experience and ads. Recommendations are for informational purposes only.

CP

Control Parts

Products

Products

Control Parts

3RH1921-1LA11

4.5 (1,234)

Sold 100+ last 30 days

20% off first order

$38.00

Color

Black

Quantity

Product description loading

Product description loading

This is the product description text that will appear here.

Shop is the next step on our mission to make commerce better for everyone.

Start selling

For brands

For creators

Build your store

Information

Shop Pay

Help center

Social

X (Twitter)

Instagram

Legal

Terms of Service

Privacy Policy

Your Privacy Choices

Powered by

|

Start selling for free

Language

© Shopify Inc. 2026

Quantity

1

Description

3RH1921-1LA11 Siemens Auxiliary Contact BlockThe Siemens 3RH1921-1LA11 is a
snap on front mount auxiliary
contact block with 1NO and 1NC contacts.
Conforms to IEC 60947-5-1
Options listed below
For Use With: 3RT102 Contactors
3RT103 Contact...

Delivery & Returns

C

Control Parts

5 (18)

More from Control Parts

3RT1034-1A..0

XTCE009B10

3RH2921-1DA20

3RT1054-6AF36

100-C09*10

3RT2026-1AK60

100-C30B10

3RT2035-1AP60

100-C12*10

140M-C2E-B40

100-C09D10

3TX4010-2A

Related to Control Parts

SuperBreakers

4.8

(1.3K)

Allen-Bradley 1492-EAJ35 End Anchor

Allen-Bradley 1492-EAJ35 End Anchor

Square D QO120 - 20A 1 Pole Miniature Circuit Breaker

(7)

Siemens B120 - 20A 1 Pole Molded Case Circuit Breaker

(5)

ABB / General Electric THQB1120 - 20A 1 Pole Miniature Circuit Breaker

(7)

Square D QOB360 - 60A 3 Pole Miniature Circuit Breaker

(3)

Siemens Q120 1 Pole Circuit Breaker

Siemens Q120 - 20A 1 Pole Miniature Circuit Breaker

Eaton Bussmann FRS-R-30 Time Delay Fuse

(2)

Schneider Electric 9001KA1 Contact Block

(3)

Siemens Q2125 - 125A 2 Pole Molded Case Circuit Breaker

(1)

Square D QOB120GFI - 20A GFCI Miniature Circuit Breaker

(4)

Square D QO230 - 30A 2 Pole Miniature Circuit Breaker

(4)

Square D QO120GFI - 20A GFCI Miniature Circuit Breaker

(4)

SimplyBreakers.com

4.7

(4.5K)

QO120 - Square D - 20 Amp Circuit Breaker

66% off

QO120 - Square D - 20 Amp Circuit Breaker

(64)

Q120 - Siemens - 20 Amp Circuit Breaker

Q120 - Siemens - 20 Amp Circuit Breaker

(10)

85% off

HOM115PCAFI - Square D Homeline - Arc Fault (AFCI) Circuit Breaker

(14)

B120 - Siemens 20 Amp Single Pole Bolt-On Circuit Breaker

B120 - Siemens - 20 Amp Circuit Breaker

(11)

28% off

BRP115AF - Eaton - 15 Amp AFCI Breaker

(9)

HOM120PCAFI - Square D Homeline - Arc Fault (AFCI) Circuit Breaker

(10)

77% off

QO120GFI - Square D - 20 Amp GFCI Circuit Breaker

(11)

QO115 - Square D - 15 Amp Circuit Breaker

QO115 - Square D - 15 Amp Circuit Breaker

(34)

QO220 - Square D - 20 Amp Circuit Breaker

QO220 - Square D - 20 Amp Circuit Breaker

(21)

BRP120GF - Eaton - GFCI Circuit Breaker

88% off

BRP120GF - Eaton - GFCI Circuit Breaker

82% off

QO120PAFGF - Square D - Dual Function Circuit Breaker

(23)

Q2100 - Siemens 100 Amp Double Pole Circuit Breaker

92% off

Q2100 - Siemens - 100 Amp Circuit Breaker

(32)

Fresh Water Systems

4.5

(8.5K)

John Guest Locking Clip - 3/8"

John Guest Locking Clip - 3/8"

(4)

JACO P-PG-10 Polypropylene Plastic Gripper Nut 5/8 OD Tube

JACO P-PG-10 Polypropylene Plastic Gripper Nut 5/8 OD Tube

Dow Molykote 111 O-Ring Lubricant - 6 Gram Pillow Pack

Dow Molykote 111 O-Ring Lubricant - 6 Gram Pillow Pack

(4)

Pipe Clip - 3/4" CTS and 22 mm

Pipe Clip - 3/4" CTS and 22 mm

Nipple Hex - 3/4" MPT Natural Nylon

Nipple Hex - 3/4" MPT Natural Nylon

John Guest Collet Cover - 3/8 OD

John Guest Collet Cover - 3/8 OD

FitQuik Polypropylene Union Tee Barb Fitting - 5/32 ID x 5/32 ID x 5/32 ID

FitQuik Polypropylene Union Tee Barb Fitting - 5/32 ID x 5/32 ID x 5/32 ID

SLM2170 Luer Fitting Natural PVDF Male Slip Luer X 1/16 HB

SLM2170 Luer Fitting Natural PVDF Male Slip Luer X 1/16 HB

PMLM2131 Luer Fitting Black Nylon Panel Mount Male Luer X 1/16 HB

PMLM2131 Luer Fitting Black Nylon Panel Mount Male Luer X 1/16 HB

Crystal Mountain SUB-C200343 SmartFlo SF-2 Water Cartridge Reservoir Replacement

Crystal Mountain SUB-C200343 SmartFlo SF-2 Water Cartridge Reservoir Replacement

(111)

Sani-System Water Softener Sanitizer - 0.5 oz Packet - NSF - EPA

Sani-System Water Softener Sanitizer - 0.5 oz Packet - NSF - EPA

(17)

John Guest Male Connector NPTF - 1/4 x 1/4 NPTF

John Guest Male Connector NPTF - 1/4 x 1/4 NPTF

(1)

Toolup

4.8

(298)

Carnie QH-2-100 Quick Hook "S"

Carnie QH-2-100 Quick Hook "S"

Dewalt DWMT86392OSP Mechanics 3/8" Drive Hex Bit Socket 5/16" SAE

32% off

Dewalt DWMT86392OSP Mechanics 3/8" Drive Hex Bit Socket 5/16" SAE

DeWalt DWA4511 4-1/2" x 1/8" x 7/8" Metal Grinding Wheel

40% off

DeWalt DWA4511 4-1/2" x 1/8" x 7/8" Metal Grinding Wheel

(1)

Woods 41008 Surge Protector One 3-Prong Power Outlet LED Indicator Light and Alarm, 1080J, White

34% off

Woods 41008 Surge Protector One 3-Prong Power Outlet LED Indicator Light and Alarm, 1080J, White

Milwaukee 48-32-4094 SHOCKWAVE Impact Duty Driver Bit Set - 80PC

21% off

Milwaukee 48-32-4094 SHOCKWAVE Impact Duty Driver Bit Set - 80PC

(1)

Weiler 44167 Small Hand Wire Scratch Brush, Stainless Fill, Wood Block, 3 x 7 Rows

91% off

Weiler 44167 Small Hand Wire Scratch Brush, Stainless Fill, Wood Block, 3 x 7 Rows

DeWalt DWHT83554 ToughSeries Construction Jack Extension Adjustable 12-27" Height 340 lb Capacity

24% off

DeWalt DWHT83554 ToughSeries Construction Jack Extension Adjustable 12-27" Height 340 lb Capacity

Relton GRT-3-6 3/16" X 6" GROO-V TIP BIT

56% off

Relton GRT-3-6 3/16" X 6" GROO-V TIP BIT

Stanley 10-550M Heavy-Duty Titan Fixed Blade Trimming Knife

34% off

Stanley 10-550M Heavy-Duty Titan Fixed Blade Trimming Knife

(2)

Milwaukee 49-94-1500 1-1/2" Reinforced Cut-Off Wheel, 5 Pack

55% off

Milwaukee 49-94-1500 1-1/2" Reinforced Cut-Off Wheel, 5 Pack

DeWalt DWHTPAD TOUGHSERIES Construction Jack Non-Marring Pad Accessory Pack 5.5 L x 1.4 W x 10.2 H (2 Pack)

24% off

DeWalt DWHTPAD TOUGHSERIES Construction Jack Non-Marring Pad Accessory Pack 5.5 L x 1.4 W x 10.2 H (2 Pack)

(1)

Milwaukee 2105 Aluminum 100-Lumen Pen Light with Clip

49% off

Milwaukee 2105 Aluminum 100-Lumen Pen Light with Clip

Discover top brands

Fashion Nova

4.3 (428.9K)

Exclusive offer available

Revice

4.5 (8.7K)

Rockstar Original

Rockstar Original

Exclusive offer available

Rockstar Original

4.6 (185.5K)

Little Sleepies

Exclusive offer available

Little Sleepies

4.9 (402.8K)

Culture Kings US

Culture Kings US

Culture Kings US

4.7 (148.1K)

Exclusive offer available

The GLD Shop

4.7 (169.2K)

Mandala Scrubs

Exclusive offer available

Mandala Scrubs

4.6 (11.3K)

32 Degrees

4.7 (227.9K)

OOFOS

Exclusive offer available

OOFOS

4.5 (177.9K)

Aviator Nation

Exclusive offer available

Aviator Nation

4.5 (93.1K)