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

Siemens Definite Purpose Contactor: 2 Poles, 24V AC, 30 A, Non-Reversing - Non-Reversing Definite Purpose Contactors
SiemensNon-Reversing Definite Purpose Contactors

Siemens Definite Purpose Contactor: 2 Poles, 24V AC, 30 A, Non-Reversing

The SIEMENS 42 Series Definite Purpose Contactor is a non-reversing, single-phase contactor with 2 poles and a 2NO main pole contact form. It features a 24V AC coil, a maximum voltage rating of 600V AC, and a 30 A…

SKU 3G-OTH-43825

Brand
Siemens
Item
Definite Purpose Contactor: 2 Poles, 24V AC, 30 A, Non-Reversing
Category
Non-Reversing Definite Purpose Contactors
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
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

Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

Siemens
Manufacturer Part Number
42BF15AJ
Series
42 Series
Type
30 A, Non-Reversing, Std Contactor Frame Size
AC
24V
Phase
Single
Coil Voltage
24V AC
Mounting Style
Surface
Main Pole Contact Form
2NO
Maximum Voltage Rating
600V AC
Terminal Connection Type
Quick Disconnect and Screw/Box Lug

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 42 Series Definite Purpose Contactor is a non-reversing, single-phase contactor with 2 poles and a 2NO main pole contact form. It features a 24V AC coil, a maximum voltage rating of 600V AC, and a 30 A rating, with surface mounting and terminal connections via quick disconnect and screw/box lug.

Frequently Asked Questions

What is the SIEMENS 42BF15AJ definite purpose contactor used for?

The SIEMENS 42BF15AJ definite purpose contactor is used for switching single-phase loads in HVAC, refrigeration, and industrial equipment. Its 2-pole, 2NO configuration and 30 A rating make it suitable for controlling compressors, fans, and pumps in commercial and light industrial applications.

What are the specifications of the SIEMENS 42BF15AJ contactor?

The SIEMENS 42BF15AJ is a 2-pole, non-reversing definite purpose contactor with a 24V AC coil, 30 A rating, and maximum voltage rating of 600V AC. It features surface mounting, quick disconnect and screw/box lug terminals, and a 2NO main pole contact form. It is part of the SIEMENS 42 Series.

Where to buy the SIEMENS 42BF15AJ contactor worldwide?

You can source the SIEMENS 42BF15AJ contactor 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; we supply genuine SIEMENS components for industrial applications.

How to install the SIEMENS 42BF15AJ definite purpose contactor?

Mount the SIEMENS 42BF15AJ on a flat surface using the provided slots. Connect power and load wires to the quick disconnect or screw/box lug terminals per the wiring diagram. Ensure the 24V AC coil voltage matches the control circuit. Follow standard electrical safety practices and local codes.

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 non-reversing definite purpose contactors. 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

Compatible alternatives & equivalents

Cross-referenced by specification & description
SIEMENS Definite Purpose Contactor: 3 Poles, 24V AC, 60 A, Non-Reversing, Std Contactor Frame Size (MPN 42EF35AJ)
Siemens
SIEMENS Definite Purpose Contactor: 3 Poles, 24V AC, 60 A, Non-Reversing, Std Contactor Frame Size (MPN 42EF35AJ)
SIEMENS Definite Purpose Contactor: 2 Poles, 277V AC, 40 A, Non-Reversing, Std Contactor Frame Size (MPN 42CF15AL)
Siemens
SIEMENS Definite Purpose Contactor: 2 Poles, 277V AC, 40 A, Non-Reversing, Std Contactor Frame Size (MPN 42CF15AL)
SIEMENS Definite Purpose Contactor: 2 Poles, 120V AC, 30 A, Non-Reversing, Std Contactor Frame Size (MPN 42BF15AF)
Siemens
SIEMENS Definite Purpose Contactor: 2 Poles, 120V AC, 30 A, Non-Reversing, Std Contactor Frame Size (MPN 42BF15AF)
SIEMENS Definite Purpose Contactor: 3 Poles, 120V AC, 30 A, Non-Reversing, Std Contactor Frame Size (MPN 42BF35AF)
Siemens
SIEMENS Definite Purpose Contactor: 3 Poles, 120V AC, 30 A, Non-Reversing, Std Contactor Frame Size (MPN 42BF35AF)
SIEMENS Definite Purpose Contactor: 3 Poles, 277V AC, 30 A, Non-Reversing, Std Contactor Frame Size (MPN 42BF35AL)
Siemens
SIEMENS Definite Purpose Contactor: 3 Poles, 277V AC, 30 A, Non-Reversing, Std Contactor Frame Size (MPN 42BF35AL)
SIEMENS Definite Purpose Contactor: 2 Poles, 120V AC, 40 A, Non-Reversing, Std Contactor Frame Size (MPN 42CF15AF)
Siemens
SIEMENS Definite Purpose Contactor: 2 Poles, 120V AC, 40 A, Non-Reversing, Std Contactor Frame Size (MPN 42CF15AF)

More from Siemens

View all Siemens parts
SIEMENS Definite Purpose Contactor: 3 Poles, 208-240V AC, 30 A, Non-Reversing (MPN 42BF35AG)
Siemens
SIEMENS Definite Purpose Contactor: 3 Poles, 208-240V AC, 30 A, Non-Reversing (MPN 42BF35AG)
SIEMENS Definite Purpose Contactor: 3 Poles, 24V AC, 50 A, Non-Reversing, Std Contactor Frame Size (MPN 42DF35AJ)
Siemens
SIEMENS Definite Purpose Contactor: 3 Poles, 24V AC, 50 A, Non-Reversing, Std Contactor Frame Size (MPN 42DF35AJ)
SIEMENS Definite Purpose Magnetic Contactor: 2 Poles, 480V AC, 40 A, Non-Reversing (MPN 45GG20AH)
Siemens
SIEMENS Definite Purpose Magnetic Contactor: 2 Poles, 480V AC, 40 A, Non-Reversing (MPN 45GG20AH)
SIEMENS Definite Purpose Contactor: 3 Poles, 277V AC, 40 A, Non-Reversing, Std Contactor Frame Size (MPN 42CF35AL)
Siemens
SIEMENS Definite Purpose Contactor: 3 Poles, 277V AC, 40 A, Non-Reversing, Std Contactor Frame Size (MPN 42CF35AL)
SIEMENS Definite Purpose Magnetic Contactor: 3 Poles, 277V AC, 75 A, Non-Reversing (MPN 42FE35AL)
Siemens
SIEMENS Definite Purpose Magnetic Contactor: 3 Poles, 277V AC, 75 A, Non-Reversing (MPN 42FE35AL)
SIEMENS Definite Purpose Contactor: 3 Poles, 120V AC, 50 A, Non-Reversing, Std Contactor Frame Size (MPN 42DF35AF)
Siemens
SIEMENS Definite Purpose Contactor: 3 Poles, 120V AC, 50 A, Non-Reversing, Std Contactor Frame Size (MPN 42DF35AF)
SIEMENS Definite Purpose Magnetic Contactor: 3 Poles, 480V AC, 75 A, Non-Reversing (MPN 42FE35AH)
Siemens
SIEMENS Definite Purpose Magnetic Contactor: 3 Poles, 480V AC, 75 A, Non-Reversing (MPN 42FE35AH)
SIEMENS Definite Purpose Contactor: 2 Poles, 208-240V AC, 40 A, Non-Reversing (MPN 42CF15AG)
Siemens
SIEMENS Definite Purpose Contactor: 2 Poles, 208-240V AC, 40 A, Non-Reversing (MPN 42CF15AG)