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.
