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1sna290381r0500 – d1.5/4.4l grey
TE Connectivity 1SNA290381R0500 D1.5/4.4L is a grey four-connection spring-clamp feed-through terminal block rated at 18 A and 800 V with a 1.5 mm² rated cross-section and compact 4 mm width.
Why Choose the TE Connectivity D1.5/4.4L 1SNA290381R0500 Spring Terminal Block?
The TE Connectivity 1SNA290381R0500, manufacturer designation D1.5/4.4L, is a compact four-connection spring-clamp feed-through terminal block designed for high-density wiring in industrial control panels, automation systems and machinery. Part of the established TE Connectivity ENTRELEC SNA spring terminal block range, it combines four conductor connections with a narrow 4 mm width to maximise available DIN rail space.
The D1.5/4.4L uses spring-clamp connection technology with front conductor entry, allowing conductors to be installed and serviced conveniently. Spring contact pressure is independent of installer-applied screw torque and automatically compensates for conductor creep, helping maintain dependable electrical connections throughout the service life of industrial equipment.
With a rated cross-section of 1.5 mm², rated current of 18 A and rated voltage of 800 V, the 1SNA290381R0500 provides a capable connection solution for industrial control and signal wiring. Its grey polyamide housing, IP20 protection and compatibility with standard 35 mm DIN rails make it suitable for professional panel building, machinery and automation applications.
Key Advantages
- Compact four-connection feed-through terminal block for high-density wiring.
- Narrow 4 mm terminal width helps maximise available DIN rail space.
- Spring-clamp connection technology provides consistent conductor contact pressure.
- 18 A rated current and 800 V rated voltage.
- Front wiring entry provides convenient conductor access during installation and maintenance.
- Integrated features support jumpering, marking and electrical testing within industrial control systems.
Key Features
- TE Connectivity ENTRELEC SNA spring terminal block range.
- D1.5/4.4L four-connection design.
- Spring-clamp termination technology.
- Feed-through terminal function.
- Four conductor connections on one level.
- 18 A rated current.
- 800 V rated voltage.
- 1.5 mm² rated cross-section.
- 8 kV rated impulse withstand voltage.
- 4 mm spacing for high-density installations.
- IP20 protection rating at the main terminals.
High-Density Spring-Clamp Connections for Industrial Control Panels
Spring-clamp terminal technology maintains conductor contact pressure without relying on installer-applied screw torque. This provides consistent electrical termination while automatically compensating for conductor creep, making spring terminals well suited to industrial applications where reliable long-term wiring and efficient panel assembly are important.
The D1.5/4.4L combines these benefits with four conductor connections in a narrow 4 mm format. Its feed-through configuration, front wiring access and support for jumpering, marking and testing make the 1SNA290381R0500 particularly useful for high-density PLC cabinets, machinery panels and industrial automation systems.
Typical Applications
- Industrial electrical control panels.
- PLC and automation control cabinets.
- Feed-through control and signal wiring.
- Machine building and OEM electrical systems.
- Process control and instrumentation panels.
- High-density DIN rail terminal installations.
Technical Specifications
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| Number of Connection Points | 4 | |
|---|---|---|
| Connection | Spring clamp | |
| Terminal Type | Multi-level | |
| Conductor Size | 1.5 mm² | |
| Number of Levels | 1 | |
| Product Series | TE SNA | |
| Colour | Grey | |
| Manufacturer | TE Connectivity / ENTRELEC | |
| Series | SNA Spring Terminal Blocks | |
| Model | D1.5/4.4L | |
| Manufacturer part number | 1SNA290381R0500 | |
| Product type | Spring-clamp feed-through terminal block | |
| Function | Feed-through | |
| Connection type | Spring clamp | |
| Number of levels | 1 | |
| Number of connections | 4 | |
| Rated cross-section | 1.5 mm² | |
| Rated current | 18 A | |
| Rated voltage | 800 V | |
| Maximum operating voltage UL/CSA | 600 V | |
| Rated impulse withstand voltage | 8 kV | |
| Rated short-time withstand current | 180 A for 1 s | |
| Flexible conductor capacity | 0.12–1.5 mm² | |
| Rigid conductor capacity | 0.12–2.5 mm² | |
| Conductor with insulated ferrule | 0.5–1 mm² | |
| UL/CSA rigid conductor range | 26–16 AWG | |
| Wire stripping length | 9.5 mm | |
| Spacing | 4 mm | |
| Colour | Grey | |
| Insulation material | Polyamide | |
| Protection rating | IP20 | |
| Pollution degree | 3 | |
| Flammability rating | UL94 V-0 | |
| DIN rail mounting | TH35-7.5 / TH35-15 | |
| Dimensions (H × W × D) | 80 × 4 × 30.5 mm | |
| Weight | approx. 7 g | |
| Operating ambient temperature | -55 to +110 °C | |
| Pack quantity | 50 | |
| EAN | 3472592903811 |
Frequently Asked Questions
What is the TE Connectivity D1.5/4.4L 1SNA290381R0500 used for?
It is a four-connection spring-clamp feed-through terminal block used to connect and distribute conductors within industrial control panels, automation equipment, machinery and instrumentation systems.
What are the electrical ratings of the D1.5/4.4L?
The terminal block has a rated current of 18 A, a rated voltage of 800 V and a rated cross-section of 1.5 mm².
How many connections does the 1SNA290381R0500 provide?
The D1.5/4.4L provides four spring-clamp conductor connections on a single level, allowing multiple conductors to be connected within a compact terminal position.
What conductor sizes can the D1.5/4.4L accept?
The spring-clamp connections accept flexible conductors from 0.12–1.5 mm² and rigid conductors from 0.12–2.5 mm², with insulated ferrules from 0.5–1 mm².
How is the D1.5/4.4L installed?
The terminal block mounts on standard TH35-7.5 or TH35-15 DIN rail and has a narrow 4 mm width, making it particularly suitable for high-density industrial control cabinets.
Trusted Spring Terminal Technology for Industrial Applications
TE Connectivity ENTRELEC SNA spring terminal blocks provide compact and dependable conductor connections for industrial electrical systems, with the D1.5/4.4L combining four spring-clamp connections, front wiring access and a space-saving 4 mm profile for high-density control and automation applications.
