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 Contact Block: 22 mm Panel Mounting Size, 1NC, Momentary, 3SU1 Series - Contact Blocks
SiemensContact Blocks

Siemens Contact Block: 22 mm Panel Mounting Size, 1NC, Momentary, 3SU1 Series

The SIEMENS Contact Block is a 22 mm panel mounting size contact block from the 3SU1 series. This momentary switch action block features one normally closed (1NC) contact and spring terminals for tool-free wiring…

SKU 3G-OTH-33240

Brand
Siemens
Item
Contact Block: 22 mm Panel Mounting Size, 1NC, Momentary, 3SU1 Series
Category
Contact Blocks
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
3SU14002AA103CA0
Series
3SU1
Type
1NC, Momentary, Spring Terminals
Color
Black/Red
Switch Action
Momentary
Compatible with Series
3SU1
Terminal Connection Type
Spring Terminals
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 Contact Block is a 22 mm panel mounting size contact block from the 3SU1 series. This momentary switch action block features one normally closed (1NC) contact and spring terminals for tool-free wiring. The unit is black and red, with manufacturer part number 3SU14002AA103CA0.

Frequently Asked Questions

What is the SIEMENS 3SU14002AA103CA0 contact block used for?

The SIEMENS 3SU14002AA103CA0 contact block is used as a switching element in industrial control panels and machinery. It provides one normally closed (1NC) momentary contact for applications requiring temporary circuit interruption, such as emergency stop or limit switch functions within the 3SU1 series.

What are the specifications of the SIEMENS 3SU14002AA103CA0 contact block?

This SIEMENS contact block has a 22 mm panel mounting size, 1NC momentary switch action, and spring terminals for tool-free wiring. It is part of the 3SU1 series, has a black/red color, and uses the manufacturer part number 3SU14002AA103CA0. The terminal connection type is spring terminals.

Where to buy the SIEMENS 3SU14002AA103CA0 contact block worldwide?

You can source the SIEMENS 3SU14002AA103CA0 contact block worldwide through 3G Electric. As a global industrial equipment distributor since 1990, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time.

How to install the SIEMENS 3SU14002AA103CA0 contact block?

To install the SIEMENS 3SU14002AA103CA0 contact block, mount it into a 22 mm panel cutout and secure it with the appropriate actuator. Use the spring terminals for tool-free wiring by inserting stripped wires into the terminal openings. Ensure the 1NC contact is correctly wired for momentary switching applications.

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 contact blocks. 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 Contact Block: 22 mm Panel Mounting Size, 1NC, Momentary, 3SU1 Series, Spring Terminals (MPN 3SU14001AA103HA0). Key specifications — Switch Action: Momentary; Terminal Connection Type: Spring Terminals; Brand: SIEMENS; Compatible with Series: 3SU1.
Siemens
SIEMENS Contact Block: 22 mm Panel Mounting Size, 1NC, Momentary, 3SU1 Series, Spring Terminals (MPN 3SU14001AA103HA0). Key specifications — Switch Action: Momentary; Terminal Connection Type: Spring Terminals; Brand: SIEMENS; Compatible with Series: 3SU1.
SIEMENS Contact Block: 22 mm Panel Mounting Size, 1NC, Momentary, 3SU1 Series, Screw Terminals (MPN 3SU1400-1AA10-1HA0). Key specifications — Switch Action: Momentary; Terminal Connection Type: Screw Terminals; Brand: SIEMENS; Compatible with Series: 3SU1.
Siemens
SIEMENS Contact Block: 22 mm Panel Mounting Size, 1NC, Momentary, 3SU1 Series, Screw Terminals (MPN 3SU1400-1AA10-1HA0). Key specifications — Switch Action: Momentary; Terminal Connection Type: Screw Terminals; Brand: SIEMENS; Compatible with Series: 3SU1.
SIEMENS Contact Block: 22 mm Panel Mounting Size, 1NO/1NC, Momentary, 3SU1 Series, Screw Terminals (MPN 3SU1400-1AA10-1FA0). Key specifications — Switch Action: Momentary; Terminal Connection Type: Screw Terminals; Brand: SIEMENS; Compatible with Series: 3SU1.
Siemens
SIEMENS Contact Block: 22 mm Panel Mounting Size, 1NO/1NC, Momentary, 3SU1 Series, Screw Terminals (MPN 3SU1400-1AA10-1FA0). Key specifications — Switch Action: Momentary; Terminal Connection Type: Screw Terminals; Brand: SIEMENS; Compatible with Series: 3SU1.
SIEMENS Contact Block: 30 mm Panel Mounting Size, 1NC, Momentary, Universal Series, Screw Terminals (MPN 52BAJ). Key specifications — Switch Action: Momentary; Terminal Connection Type: Screw Terminals; Brand: SIEMENS; Compatible with Series: Universal.
Siemens
SIEMENS Contact Block: 30 mm Panel Mounting Size, 1NC, Momentary, Universal Series, Screw Terminals (MPN 52BAJ). Key specifications — Switch Action: Momentary; Terminal Connection Type: Screw Terminals; Brand: SIEMENS; Compatible with Series: Universal.
SIEMENS Contact Block: 30 mm Panel Mounting Size, 1NO/1NC, Momentary/Make Before Break (MPN 52BJK). Key specifications — Switch Action: Momentary/Make Before Break; Terminal Connection Type: Screw Terminals; Brand: SIEMENS; Compatible with Series: Universal.
Siemens
SIEMENS Contact Block: 30 mm Panel Mounting Size, 1NO/1NC, Momentary/Make Before Break (MPN 52BJK). Key specifications — Switch Action: Momentary/Make Before Break; Terminal Connection Type: Screw Terminals; Brand: SIEMENS; Compatible with Series: Universal.

More from Siemens

View all Siemens parts →
SIEMENS Contact Block: 30 mm Panel Mounting Size, 1NC, Momentary/Late Break, Universal Series (MPN 52BAU). Key specifications — Switch Action: Momentary/Late Break; Terminal Connection Type: Screw Terminals; Brand: SIEMENS; Compatible with Series: Universal.
Siemens
SIEMENS Contact Block: 30 mm Panel Mounting Size, 1NC, Momentary/Late Break, Universal Series (MPN 52BAU). Key specifications — Switch Action: Momentary/Late Break; Terminal Connection Type: Screw Terminals; Brand: SIEMENS; Compatible with Series: Universal.
SIEMENS Contact Block: 30 mm Panel Mounting Size, 1NO, Momentary, Universal Series, Screw Terminals (MPN 52BAK). Key specifications — Switch Action: Momentary; Terminal Connection Type: Screw Terminals; Brand: SIEMENS; Compatible with Series: Universal.
Siemens
SIEMENS Contact Block: 30 mm Panel Mounting Size, 1NO, Momentary, Universal Series, Screw Terminals (MPN 52BAK). Key specifications — Switch Action: Momentary; Terminal Connection Type: Screw Terminals; Brand: SIEMENS; Compatible with Series: Universal.
SIEMENS Contact Block: 22 mm Panel Mounting Size, 1NC, Momentary, 3SU1 Series, Screw Terminals (MPN 3SU14002AA101CA0). Key specifications ��— Color: Black/Red; Switch Action: Momentary; Terminal Connection Type: Screw Terminals; Brand: SIEMENS; Compatible with Series: 3SU1.
Siemens
SIEMENS Contact Block: 22 mm Panel Mounting Size, 1NC, Momentary, 3SU1 Series, Screw Terminals (MPN 3SU14002AA101CA0). Key specifications — Color: Black/Red; Switch Action: Momentary; Terminal Connection Type: Screw Terminals; Brand: SIEMENS; Compatible with Series: 3SU1.
SIEMENS Contact Block: 22 mm Panel Mounting Size, 1NO, Momentary, 3SU1 Series, Spring Terminals (MPN 3SU14002AA103BA0). Key specifications — Color: Black/Green; Switch Action: Momentary; Terminal Connection Type: Spring Terminals; Brand: SIEMENS; Compatible with Series: 3SU1.
Siemens
SIEMENS Contact Block: 22 mm Panel Mounting Size, 1NO, Momentary, 3SU1 Series, Spring Terminals (MPN 3SU14002AA103BA0). Key specifications — Color: Black/Green; Switch Action: Momentary; Terminal Connection Type: Spring Terminals; Brand: SIEMENS; Compatible with Series: 3SU1.
SIEMENS Contact Block: 22 mm Panel Mounting Size, 1NO, Momentary, 3SU1 Series, Screw Terminals (MPN 3SU1400-1AA10-1BA0). Key specifications — Switch Action: Momentary; Terminal Connection Type: Screw Terminals; Brand: SIEMENS; Compatible with Series: 3SU1.
Siemens
SIEMENS Contact Block: 22 mm Panel Mounting Size, 1NO, Momentary, 3SU1 Series, Screw Terminals (MPN 3SU1400-1AA10-1BA0). Key specifications — Switch Action: Momentary; Terminal Connection Type: Screw Terminals; Brand: SIEMENS; Compatible with Series: 3SU1.
SIEMENS Contact Block: 22 mm Panel Mounting Size, 1NO, Momentary, 3SU1 Series, Screw Terminals (MPN 3SU14002AA101BA0). Key specifications — Color: Black/Green; Switch Action: Momentary; Terminal Connection Type: Screw Terminals; Brand: SIEMENS; Compatible with Series: 3SU1.
Siemens
SIEMENS Contact Block: 22 mm Panel Mounting Size, 1NO, Momentary, 3SU1 Series, Screw Terminals (MPN 3SU14002AA101BA0). Key specifications — Color: Black/Green; Switch Action: Momentary; Terminal Connection Type: Screw Terminals; Brand: SIEMENS; Compatible with Series: 3SU1.
SIEMENS Contact Block: 22 mm Panel Mounting Size, 1NC, Momentary, 3SU1 Series, Screw Terminals (MPN 3SU1400-1AA10-1CA0). Key specifications — Switch Action: Momentary; Terminal Connection Type: Screw Terminals; Brand: SIEMENS; Compatible with Series: 3SU1.
Siemens
SIEMENS Contact Block: 22 mm Panel Mounting Size, 1NC, Momentary, 3SU1 Series, Screw Terminals (MPN 3SU1400-1AA10-1CA0). Key specifications — Switch Action: Momentary; Terminal Connection Type: Screw Terminals; Brand: SIEMENS; Compatible with Series: 3SU1.
SIEMENS Contact Block: 22 mm Panel Mounting Size, 1NO, Momentary, 3SU1 Series, Spring Terminals (MPN 3SU14001AA103BA0). Key specifications — Switch Action: Momentary; Terminal Connection Type: Spring Terminals; Brand: SIEMENS; Compatible with Series: 3SU1.
Siemens
SIEMENS Contact Block: 22 mm Panel Mounting Size, 1NO, Momentary, 3SU1 Series, Spring Terminals (MPN 3SU14001AA103BA0). Key specifications — Switch Action: Momentary; Terminal Connection Type: Spring Terminals; Brand: SIEMENS; Compatible with Series: 3SU1.