Phoenix Contact3031157 5, STTB 1 Series Double Level Terminal Block, 0.08 → 1.5mm², Double-Level, Spring Cage

From Phoenix Contact, the STTB double-level, spring-cage terminal blocks are great DIN rail mounted terminal blocks that boast a compact design, dual-layers and mount onto popular DIN rails. These DIN rail terminals are spring-cage connection technology and that allows for an effortless install thanks to you only having to strip wire and push-in your conductor. The terminal block access an AWG of 28-16 and they can be mounted onto NS 35/7.5 or NS 35/15 DIN rails for maximum flexibility and applications.

These terminal blocks come in a grey colour and housings are made from a polyamide material. Contacts on this device are plated copper. The STTB range is also backed by an ATEX EX rating that means it has a certification to be installed in potentially explosive areas.

Potentials on two levels to halve space requirement compared with single-level clamps

The STTB range can be used in the below, but are not subjected to:

• Railway industry (Tried and tested)


• Plant engineering


• Machine building


• Process industries

Terminal blocks are simple to wire. Wiring depends on what type of terminal block you have. These specific terminal blocks are spring-cage terminal blocks. To wire spring cage terminal blocks you can either use a strong non-flexible cable or use a cable with a ferrule on. Simply strip your cable and clamp a ferrule if you're using one, insert a screwdriver into the actuation shaft to open the terminal point, push your conductor in and remove your screwdriver. Ensure your conductor is pushed in as far as it can go.

The STTB series is apart of Phoenix Contacts vast and comprehensive portfolio. Complete line is a solution from Phoenix Contact that gives you a full range of products that all go hand-in-hand to make a perfect control cabinet. It covers all bases from connections, switching and measuring all the way to controlling, supplying and automation. Choosing complete line products makes it far more efficient to get a cabinet working.

UL; CUL; CSA

This double level terminal block is designed for efficient electrical connections in a compact format. The STTB 1.5 model uses a spring cage mechanism, accommodating conductor sizes from 0.08mm² to 1.5mm². With its grey colour and durable construction, this terminal block functions effectively within a temperature range of -60 to +110°C, ensuring performance in demanding environments.

• Spring cage termination ensures secure connections
• Compact design optimises installation space
• Rated for up to 17.5A for increased load capacity
• Compliant with IEC 60947-7-1 for international use
• Versatile conductor compatibility for multiple applications
• Supports connections for up to four wires

• Used in railway for reliable wiring
• Suitable for plant engineering and machine assembly
• Ideal for process industry
• Can be paired with specific FBS bridges for level connections

Yes, it functions effectively from -60°C to +110°C.

It supports conductors ranging from 0.08mm² to 1.5mm².

It is rated for a maximum current of 17.5A.

Yes, it meets IEC 60947-7-1 standards.

UL, CUL, CSA