Double Level Terminal Block 30 A 500 V 4 mm2 Spring Cage Din Rail Mount · Phoenix Contact 3031429
Double-level spring-cage terminal block for DIN rail mounting with 30 A, 500 V rating and 4 mm2 nominal conductor size. Commonly used in control panels and machine wiring where two levels help save rail space while maintaining secure spring-clamp terminations.
What this product is for
This double-level terminal block is used to terminate and distribute conductors on NS 35 DIN rail in control cabinets, machinery panels, and industrial electrical assemblies. It provides two levels of spring-cage connections in one compact grey housing.
Use for
Use for panel wiring, control circuits, marshalling, and other applications where you need organised terminations with reduced rail space. It accepts conductors from 0.08 to 6 mm2, approximately 28 to 10 AWG, and is rated 30 A and 500 V.
Avoid for
Avoid using it outside its published conductor range, current rating, voltage rating, or approved DIN rail mounting system. Confirm accessory, marking, and bridging requirements before ordering for multi-point assemblies.
Best for
Best for electricians, panel builders, and OEMs who need compact multi-level terminations with vibration-resistant spring-cage connections. A double-level format is typically chosen when cabinet space is limited and wiring density is higher than a single-level block can handle.
Installed in
Installed in industrial control panels, process equipment, machine skids, and distribution enclosures using NS 35/7.5 or NS 35/15 DIN rail.
Why this product exists
This product exists to increase wiring density on DIN rail while keeping terminations secure and serviceable. Compared with single-level blocks, a double-level design can help reduce rail length in crowded enclosures. Actual panel layout efficiency depends on conductor size, spacing, accessories, and local electrical code.
Compared with similar products
Compared with single-level feed-through terminal blocks, this model provides two rows and four total connections in a similar footprint category. Spring-cage termination is commonly selected where consistent clamping force and resistance to vibration are important in control cabinet work.
Specifications
- Manufacturer: Phoenix Contact
- Manufacturer part number: 3031429
- Series: ST
- Model: STTB 4
- Product type: Double-level spring-cage terminal block
- Mounting: NS 35/7.5 and NS 35/15 DIN rail
- Nominal voltage: 500 V
- Nominal current: 30 A
- Nominal cross section: 4 mm2
- Conductor range: 0.08 to 6 mm2, approximately 28 to 10 AWG
- Number of levels: 2
- Number of connections: 4
- Number of potentials: 2
- Colour: Grey
- MountingNS 35/7.5 and NS 35/15 DIN rail
- SeriesST
- ColourGrey
- Conductor Range0.08 to 6 mm2, approximately 28 to 10 AWG
- ModelSTTB 4
- Nominal Voltage500 V
- Nominal Current30 A
- Number Of Connections4
- Nominal Cross Section4 mm2
- Number Of Levels2
- BrandsPhoenix Contact
- Stock in Elmira64
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