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1snk508312r0000 – zs10-st-1 test disconnect terminal
TE Connectivity 1SNK508312R0000 ZS10-ST-1 is an 8 mm grey screw clamp test disconnect terminal block with a sliding link and two 4 mm test sockets, rated at 50 A and 630 V IEC for potential transformer and industrial measurement circuits.
£3.13
Why Choose the TE Connectivity ZS10-ST-1 Test Disconnect Terminal?
The TE Connectivity 1SNK508312R0000 ZS10-ST-1 is a robust screw clamp test disconnect terminal block designed specifically for potential transformer (PT) circuits and industrial test and measurement applications. As part of the TE Connectivity ENTRELEC SNK series, it combines secure screw clamp conductor termination with a sliding-link disconnect mechanism for convenient circuit isolation, measurement and maintenance.
The ZS10-ST-1 incorporates two compact built-in 4 mm test sockets, enabling convenient voltage measurement using compatible 4 mm test plugs. Its sliding-link disconnect mechanism allows the circuit to be isolated without removing connected conductors, making it particularly useful for commissioning, troubleshooting and routine testing within industrial electrical panels.
With an 8 mm terminal spacing, the ZS10-ST-1 provides two connection positions and supports conductors up to 10 mm² / 6 AWG. It is rated at 50 A and 630 V IEC, features a grey polyamide housing and operates across a wide -55–110 °C temperature range, providing a compact and dependable solution for industrial PT and measurement circuits.
Key Advantages
- Purpose-designed test disconnect terminal for potential transformer circuits.
- Integrated sliding-link disconnect mechanism simplifies circuit isolation and testing.
- Two built-in 4 mm test sockets provide convenient access for voltage measurements.
- 50 A, 630 V IEC rating for demanding industrial circuits.
- Supports conductors up to 10 mm² / 6 AWG.
- Compact 8 mm spacing helps conserve DIN rail space in test and measurement assemblies.
Key Features
- TE Connectivity ENTRELEC SNK series.
- ZS10-ST-1 test disconnect terminal block.
- Manufacturer part number 1SNK508312R0000.
- Screw clamp terminal technology.
- Sliding-link disconnect for circuit isolation.
- Two integrated 4 mm test sockets.
- 8 mm product spacing.
- 2 connection positions with one circuit and one level.
- 50 A rated current at 630 V IEC.
- 53 A UL and CSA current rating.
- 8000 V IEC impulse withstand voltage.
- DIN rail mounting on TH35-7.5 and TH35-15 profiles.
Reliable Testing and Isolation for Potential Transformer Circuits
Test disconnect terminal blocks provide accessible connection, measurement and isolation points within electrical control and instrumentation systems. The ZS10-ST-1 is particularly suited to potential transformer circuits, where its sliding-link disconnect allows the electrical path to be opened for testing without removing the permanently connected field wiring.
Two integrated 4 mm test sockets provide convenient low-profile access for voltage measurements using compatible test plugs. Installed alongside aligned ENTRELEC SNK feed-through and protective earth terminals, the ZS10-ST-1 helps engineers create compact and organised PT circuit assemblies for switchgear, protection and industrial measurement applications.
Typical Applications
- Potential transformer (PT) circuits.
- Voltage measurement and test circuits.
- Industrial switchgear and protection panels.
- Electrical metering and instrumentation systems.
- Industrial control and automation panels.
- Circuit isolation during commissioning and maintenance.
- Power distribution and monitoring equipment.
- OEM machinery and industrial electrical systems.
Technical Specifications
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| Number of Connection Points | 2 | |
|---|---|---|
| Product Series | TE SNK | |
| Connection | Spring clamp | |
| Terminal Type | Disconnect / Test | |
| Colour | Grey | |
| Number of Levels | 1 | |
| Manufacturer | TE Connectivity | |
| Brand / product family | ENTRELEC | |
| Series | SNK | |
| Model | ZS10-ST-1 | |
| Manufacturer part number | 1SNK508312R0000 | |
| Product type | Screw clamp test disconnect terminal block | |
| Block function | Disconnect / test | |
| Disconnect type | Sliding link | |
| Connection type | Screw clamp | |
| Test connections | 2 × 4 mm test sockets | |
| Number of positions | 2 | |
| Number of circuits | 1 | |
| Number of levels | 1 | |
| Gauge type | A5-B5 | |
| Product spacing | 8 mm | |
| Primary colour | Grey | |
| Housing material | Polyamide | |
| IEC rated current | 50 A | |
| IEC rated voltage | 630 V | |
| UL rated current | 53 A | |
| CSA rated current | 53 A | |
| CSA rated voltage | 300 V | |
| Short-time withstand current | 1200 A for 1 s | |
| Maximum dielectric withstand voltage | 2000 V | |
| IEC impulse withstand voltage | 8000 V | |
| Flexible conductor capacity | 0.5–10 mm² / 24–6 AWG | |
| Rigid conductor capacity | 0.5–10 mm² / 24–6 AWG | |
| Insulated ferrule capacity | 0.5–6 mm² / 24–10 AWG | |
| Non-insulated ferrule capacity | 0.5–10 mm² | |
| Wire stripping length | 13 mm | |
| DIN rail mounting | TH35-7.5 / TH35-15 | |
| Operating temperature | -55–110 °C | |
| Height | 80.7 mm | |
| Width / spacing | 8 mm | |
| Depth / length | 52 mm | |
| Weight | 27 g | |
| Pack quantity | 25 |
Frequently Asked Questions
What is the TE Connectivity ZS10-ST-1 1SNK508312R0000 used for?
The ZS10-ST-1 is a test disconnect terminal block designed particularly for potential transformer circuits, providing secure conductor connections together with convenient circuit isolation and voltage measurement facilities.
How does the ZS10-ST-1 disconnect the circuit?
The terminal uses a sliding-link disconnect mechanism that allows the electrical circuit to be opened for testing, commissioning or maintenance without removing the connected conductors.
Does the ZS10-ST-1 include test sockets?
Yes. The 1SNK508312R0000 incorporates two built-in 4 mm test sockets designed for use with compatible 4 mm test plugs, providing convenient access for voltage measurements.
What are the electrical ratings of the ZS10-ST-1?
The ZS10-ST-1 has an IEC rated current of 50 A and an IEC rated voltage of 630 V, with an impulse withstand voltage of 8000 V.
What conductor sizes can the ZS10-ST-1 accept?
The terminal supports flexible and rigid conductors from 0.5–10 mm², corresponding to conductor sizes up to 6 AWG.
Trusted for Industrial Test and Measurement Circuits
TE Connectivity ENTRELEC SNK test disconnect terminals provide secure industrial connections with accessible isolation and measurement facilities, with the ZS10-ST-1 offering a compact sliding-link solution with integrated test sockets for potential transformer and voltage measurement circuits.
