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1sna107250r1200 – m 4/6 snb
TE Connectivity 1SNA107250R1200 M4/6.SNB is a 6 mm ENTRELEC SNA screw clamp blade-disconnect terminal block rated for 20 A maximum contact current and 400 V AC operation in industrial signal circuits.
£2.22
Why Choose the TE Connectivity M4/6.SNB 1SNA107250R1200 Disconnect Terminal Block?
The TE Connectivity M4/6.SNB 1SNA107250R1200 is a compact screw clamp disconnect terminal block designed for signal circuits in industrial control panels, machinery and automation systems. Part of the established TE Connectivity ENTRELEC SNA series, it combines reliable screw-terminal conductor connections with an integrated blade disconnect function for convenient circuit isolation, testing and maintenance.
The M4/6.SNB provides a single-level, two-position connection within a compact 6 mm terminal spacing. Its blade disconnect mechanism enables a circuit to be opened at the terminal without removing the connected conductors, helping simplify commissioning, troubleshooting and maintenance while maintaining organised DIN rail wiring.
Designed for signal applications, the 1SNA107250R1200 has a maximum contact current rating of 20 A and an operating voltage rating of 400 V AC. It accommodates rigid stranded and flexible conductors from 0.5–4 mm², with a nominal wire size of 4 mm² / 10 AWG, making it a versatile disconnect solution for industrial control circuits.
Key Advantages
- Compact disconnect terminal block for industrial signal circuits.
- Integrated blade disconnect mechanism allows convenient circuit isolation.
- 20 A maximum contact current rating for dependable control wiring.
- 400 V AC operating voltage for industrial electrical applications.
- Accepts rigid stranded and flexible conductors from 0.5–4 mm².
- Compact 6 mm terminal spacing helps maximise DIN rail utilisation.
- Compatible with G32, TH35-15 and TH35-7.5 DIN rails.
Key Features
- TE Connectivity ENTRELEC SNA series.
- M4/6.SNB disconnect terminal block.
- Single-level, two-position configuration.
- One circuit design for signal applications.
- Blade-type disconnect for convenient circuit isolation.
- 20 A maximum contact current rating.
- 400 V AC operating voltage.
- 4 kV IEC impulse withstand voltage.
- Secure screw terminal connection technology.
- Red-orange polyamide housing for clear identification.
- IP20 protection rating.
- UL 94V-0 flammability-rated insulating material.
Reliable Circuit Isolation for Industrial Control Systems
Disconnect terminal blocks provide a convenient means of isolating individual circuits without removing permanent field wiring. The TE Connectivity M4/6.SNB incorporates a blade disconnect mechanism that allows technicians to open the electrical path at the terminal, supporting efficient commissioning, measurement, troubleshooting and maintenance of industrial control systems.
The ENTRELEC SNA design combines this disconnect functionality with proven screw-clamp termination and broad DIN rail compatibility. Its compact 6 mm width, robust polyamide construction and wide operating temperature range make the 1SNA107250R1200 particularly suitable for densely populated control cabinets where reliable, accessible signal connections are required.
Typical Applications
- Industrial electrical control panels.
- PLC and automation cabinets.
- Signal circuit isolation and testing.
- Process control and instrumentation systems.
- Machine building and OEM equipment.
- Commissioning, diagnostics and maintenance circuits.
Technical Specifications
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| Number of Levels | 1 | |
|---|---|---|
| Product Series | TE SNA | |
| Connection | Screw clamp | |
| Terminal Type | Disconnect / Test | |
| Conductor Size | 4 mm² | |
| Colour | Red | |
| Manufacturer | TE Connectivity | |
| Brand / range | ENTRELEC | |
| Series | SNA | |
| Model | M4/6.SNB | |
| Part number | 1SNA107250R1200 | |
| Product type | Screw clamp disconnect terminal block | |
| Block function | Disconnect | |
| Disconnect type | Blade | |
| Circuit application | Signal | |
| Number of circuits | 1 | |
| Number of levels | 1 | |
| Number of positions | 2 | |
| Gauge type | A4 | |
| Maximum contact current | 20 A | |
| Operating voltage | 400 V AC | |
| Maximum UL / CSA main circuit operating voltage | 300 V | |
| IEC impulse withstand voltage | 4000 V | |
| Short-time withstand current at 1 s | 300 A | |
| Rigid stranded conductor capacity | 0.5–4 mm² | |
| Flexible conductor capacity | 0.5–4 mm² | |
| Nominal wire size | 4 mm² / 10 AWG | |
| Wire stripping length | 9.5 mm | |
| Tightening torque | 0.5 Nm | |
| Termination method | Screw terminal | |
| Product spacing / width | 6 mm | |
| Product height | 44.5 mm | |
| Product length | 44.5 mm | |
| Product depth | 44.5 mm | |
| Housing material | Polyamide | |
| Colour | Red-orange | |
| Protection rating | IP20 | |
| Flammability rating | UL 94V-0 | |
| DIN rail mounting | G32 / TH35-15 / TH35-7.5 | |
| Operating temperature range | -55 to +110 °C | |
| Weight | 11 g |
Frequently Asked Questions
What is the TE Connectivity M4/6.SNB 1SNA107250R1200 used for?
It is a screw clamp disconnect terminal block designed for connecting and conveniently isolating signal circuits in industrial control panels, machinery and automation systems.
How does the M4/6.SNB disconnect a circuit?
The terminal block incorporates a blade-type disconnect mechanism that allows the electrical circuit to be opened at the terminal without removing the permanently connected conductors.
What are the electrical ratings of the 1SNA107250R1200?
The M4/6.SNB has a maximum contact current rating of 20 A, an operating voltage of 400 V AC and an IEC impulse withstand voltage of 4000 V.
What conductor sizes can the M4/6.SNB accept?
The terminal block accepts both rigid stranded and flexible conductors from 0.5–4 mm², with a nominal wire size of 4 mm² / 10 AWG.
Which DIN rails are compatible with the M4/6.SNB?
The 1SNA107250R1200 can be mounted on G32, TH35-15 and TH35-7.5 DIN rails, providing flexibility for industrial panel and machinery installations.
Trusted Disconnect Technology for Industrial Wiring
TE Connectivity ENTRELEC SNA disconnect terminal blocks provide panel builders, automation engineers and maintenance professionals with compact, dependable connections and convenient circuit isolation for industrial signal and control systems.
