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1sna105143r2100 – m4/6.snbt.4a disconnect terminal block
TE Connectivity M4/6.SNBT.4A 1SNA105143R2100 is a 10 A, 320 V ENTRELEC SNA screw clamp knife disconnect terminal block with two integrated test sockets for industrial circuit isolation, testing and control panel applications.
Why Choose the TE Connectivity M4/6.SNBT.4A 1SNA105143R2100 Disconnect Terminal Block?
The TE Connectivity M4/6.SNBT.4A 1SNA105143R2100 is a compact screw clamp knife disconnect terminal block with integrated test sockets designed for isolating, testing and maintaining electrical circuits in industrial control panels and automation systems. Part of the established ENTRELEC SNA terminal block series, it combines secure screw clamp conductor termination with a convenient disconnect blade for straightforward circuit isolation.
The M4/6.SNBT.4A features two built-in test sockets to simplify electrical testing and troubleshooting without disturbing the connected conductors. Its disconnect blade can be operated by hand or with a screwdriver, enabling technicians to quickly isolate a circuit during commissioning, diagnostics and maintenance. The terminal also shares the same profile as the M4/6.4A feed-through terminal block, helping maintain consistent marking and accessory arrangements within a panel.
With an IEC rated voltage of 320 V, a 10 A rated current and a 4 mm² rated cross-section, the 1SNA105143R2100 provides dependable performance for industrial control and measurement circuits. Its compact 6 mm spacing, IP20 protection and compatibility with common G32 and TH35 DIN rails make it well suited to space-conscious control cabinet installations.
Key Advantages
- Integrated knife disconnect function enables convenient circuit isolation for testing and maintenance.
- Two built-in test sockets simplify measurement and diagnostic operations.
- Disconnect blade can be operated by hand or with a screwdriver.
- 10 A rated current and 320 V rated voltage for industrial control circuits.
- Compact 6 mm spacing helps maximise available DIN rail space.
- Secure screw clamp termination provides reliable conductor connections.
Key Features
- TE Connectivity ENTRELEC SNA series.
- M4/6.SNBT.4A knife disconnect terminal block.
- 10 A IEC rated current.
- 320 V IEC rated voltage.
- 4 mm² rated cross-section.
- Integrated disconnect blade for convenient circuit isolation.
- Two integrated test sockets for simplified electrical testing.
- IP20 protection at the main terminals.
- Compatible with G32, TH35-7.5 and TH35-15 DIN rails.
Reliable Circuit Isolation and Testing
Disconnect terminal blocks such as the TE Connectivity M4/6.SNBT.4A allow individual electrical circuits to be isolated without removing the connected wiring. The integrated blade provides a clear and convenient disconnection point, making the terminal particularly useful for commissioning, fault finding, measurement and scheduled maintenance within industrial electrical systems.
The M4/6.SNBT.4A further simplifies diagnostic work through its two integrated test sockets, allowing measurement equipment to be connected conveniently during testing. Combined with robust screw clamp connections and standard DIN rail mounting, this design provides an efficient solution for control panels where dependable circuit isolation and accessible testing are required.
Typical Applications
- Industrial control panels and electrical cabinets.
- Control and instrumentation circuits.
- Electrical testing and measurement circuits.
- Machine building and OEM equipment.
- Factory automation and process control systems.
- 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 | Grey | |
| Manufacturer | TE Connectivity | |
| Series | ENTRELEC SNA | |
| Model | M4/6.SNBT.4A | |
| Part number | 1SNA105143R2100 | |
| Product type | Knife disconnect terminal block | |
| Function | Disconnect | |
| Sub-function | Blade | |
| Connection type | Screw clamp | |
| Rated current | 10 A | |
| Rated voltage | 320 V | |
| Maximum operating voltage (UL / CSA) | 600 V | |
| Rated impulse withstand voltage | 4000 V | |
| Rated short-time withstand current at 1 s | 120 A | |
| Rated cross-section | 4 mm² | |
| Rigid conductor range | 0.5–4 mm² | |
| Flexible conductor range | 0.5–4 mm² | |
| UL / CSA rigid conductor range | 22–10 AWG | |
| Wire stripping length | 9.5 mm | |
| Recommended screwdriver | 4 mm | |
| Recommended tightening torque | 0.6 Nm | |
| IEC tightening torque | 0.5 Nm | |
| Spacing | 6 mm | |
| Dimensions (H × D) | 63.5 × 44.5 mm | |
| Number of levels | 1 | |
| Test facility | Two built-in test sockets | |
| Insulation material | Polyamide | |
| Colour | Grey / orange | |
| Protection rating | IP20 | |
| UL flammability rating | UL 94V-0 | |
| Mounting type | DIN rail | |
| DIN rail compatibility | G32 / TH35-7.5 / TH35-15 | |
| Operating temperature range | -55–110 °C | |
| Storage temperature range | -55–110 °C |
Frequently Asked Questions
What is the TE Connectivity M4/6.SNBT.4A 1SNA105143R2100 used for?
This terminal block is designed to provide a secure conductor connection while allowing an electrical circuit to be isolated using its integrated disconnect blade, making it suitable for testing, commissioning, diagnostics and maintenance.
What are the electrical ratings of the M4/6.SNBT.4A?
The 1SNA105143R2100 has an IEC rated voltage of 320 V and a rated current of 10 A, with a rated conductor cross-section of 4 mm².
Does the 1SNA105143R2100 include test sockets?
Yes. The M4/6.SNBT.4A incorporates two built-in test sockets to simplify electrical measurement and troubleshooting operations.
How is the circuit disconnected?
The terminal incorporates a disconnect blade that can be operated by hand or with a screwdriver, allowing the circuit to be conveniently isolated without removing the connected conductors.
Which DIN rails are compatible with the M4/6.SNBT.4A?
The 1SNA105143R2100 is designed for DIN rail mounting and is compatible with G32, TH35-7.5 and TH35-15 rails.
Trusted Industrial Connectivity from TE Connectivity
TE Connectivity ENTRELEC SNA disconnect terminal blocks provide industrial panel builders and automation engineers with reliable conductor termination, convenient circuit isolation and accessible testing for efficient commissioning and maintenance.
