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1snk505330r0000 – zs4-s-or [pk=50] switch terminal block
TE Connectivity ZS4-S-OR 1SNK505330R0000 is an orange DIN rail screw clamp disconnect terminal block with a blade isolation mechanism, 0.2–4 mm² conductor capacity and IEC ratings of 25 A and 400 V, supplied in a pack of 50.
£2.01
Why Choose the TE Connectivity ZS4-S-OR 1SNK505330R0000 Switch Terminal Block?
The TE Connectivity ZS4-S-OR 1SNK505330R0000 is a compact and reliable screw clamp disconnect terminal block designed for switching, isolation and testing of electrical circuits within industrial control panels, switchgear and automation systems. As part of the TE Connectivity ENTRELEC SNK series, it combines proven screw clamp conductor termination with an integrated blade disconnect function for convenient circuit isolation.
The ZS4-S-OR provides a practical means of disconnecting a circuit without removing the connected conductors. Its blade disconnect mechanism allows technicians to isolate individual circuits during commissioning, testing, fault finding and maintenance, while the distinctive orange housing provides clear visual identification within densely populated control cabinets.
With an IEC current rating of 25 A, an IEC voltage rating of 400 V and conductor capacity up to 4 mm², the ZS4-S-OR is suitable for a broad range of industrial control and measurement circuits. Its compact 5.2 mm spacing and standard DIN rail mounting format provide efficient installation in modern electrical panels.
Key Advantages
- Integrated blade disconnect function for convenient circuit isolation.
- 25 A IEC rated current and 400 V IEC rated voltage.
- Accepts conductors up to 4 mm² / 10 AWG depending on conductor type.
- Reliable screw clamp connection technology for secure conductor termination.
- Compact 5.2 mm terminal spacing helps maximise available DIN rail space.
- Distinctive orange housing provides clear visual identification.
Key Features
- TE Connectivity ENTRELEC SNK ZS4-S-OR terminal block.
- Disconnect / switch terminal block function.
- Blade disconnect mechanism.
- Screw clamp connection technology.
- Single-level, single-circuit configuration.
- Two connection positions.
- 25 A IEC current rating.
- 400 V IEC voltage rating.
- 5.2 mm product spacing.
- Orange polyamide housing.
- IP20 protection rating.
- UL 94V-0 flammability rating.
Reliable Circuit Isolation for Industrial Control Panels
Disconnect terminal blocks provide an accessible method of opening individual electrical circuits without removing installed conductors. This functionality is particularly valuable during commissioning, testing, measurement and maintenance, allowing technicians to isolate specific circuits while leaving surrounding panel wiring undisturbed.
The ZS4-S-OR combines a blade disconnect mechanism with reliable screw clamp termination and compact DIN rail construction. Its 25 A IEC current rating, 400 V IEC voltage rating and conductor capacity up to 4 mm² make it a versatile solution for control, instrumentation and industrial automation circuits requiring convenient isolation.
Typical Applications
- Industrial control panels and electrical cabinets.
- Control circuit isolation and switching.
- Instrumentation and measurement circuits.
- Machine building and OEM automation systems.
- PLC and process control wiring.
- Switchgear, testing and maintenance circuits.
Technical Specifications
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| Number of Levels | 1 | |
|---|---|---|
| Connection | Spring clamp | |
| Terminal Type | Disconnect / Test | |
| Product Series | TE SNK | |
| Colour | Orange | |
| Manufacturer | TE Connectivity | |
| Brand / product family | ENTRELEC | |
| Series | SNK | |
| Model | ZS4-S-OR | |
| Manufacturer part number | 1SNK505330R0000 | |
| Product type | Screw clamp disconnect terminal block | |
| Block function | Disconnect | |
| Disconnect type | Blade | |
| Connection type | Screw clamp | |
| Number of levels | 1 | |
| Number of circuits | 1 | |
| Number of positions | 2 | |
| Gauge type | A3-B3 | |
| Rated current (IEC) | 25 A | |
| Rated current (UL) | 25 A | |
| Rated voltage (IEC) | 400 V | |
| Rated voltage (CSA) | 150 V | |
| Operating voltage (UL / CSA) | 150 V | |
| Impulse withstand voltage (IEC) | 6000 V | |
| Dielectric withstand voltage | 1890 V | |
| Short-time withstand current at 1 s | 480 A | |
| Power loss | 0.8 W | |
| Flexible conductor range | 0.2–4 mm² / 24–10 AWG | |
| Rigid stranded conductor range | 0.2–4 mm² / 24–10 AWG | |
| Insulated ferrule capacity | 0.22–2.5 mm² / 24–14 AWG | |
| Non-insulated ferrule capacity | 0.22–4 mm² / 24–10 AWG | |
| Twin ferrule capacity | 0.22–1.5 mm² / 24–16 AWG | |
| Two flexible conductors per clamp | 0.2–1.5 mm² / 24–16 AWG | |
| Two rigid stranded conductors per clamp | 0.2–1.5 mm² / 24–16 AWG | |
| Wire stripping length | 10.5 mm | |
| Tool size | 3.5 mm | |
| Terminal spacing | 5.2 mm | |
| Housing material | Polyamide | |
| Colour | Orange | |
| Protection rating | IP20 | |
| Flammability rating | UL 94V-0 | |
| Mounting type | DIN rail | |
| DIN rail compatibility | TH35-7.5 / TH35-15 | |
| Height | 53 mm | |
| Length | 51.35 mm | |
| Depth | 51.4 mm | |
| Weight | 8.6 g | |
| Operating temperature | -55–110 °C | |
| Installation temperature | -5–40 °C | |
| Pack quantity | 50 pieces | |
| Barcode | 3472595053308 |
Frequently Asked Questions
What is the TE Connectivity ZS4-S-OR 1SNK505330R0000 used for?
The ZS4-S-OR is a screw clamp disconnect terminal block used to connect and conveniently isolate individual electrical circuits in industrial control panels, switchgear and automation systems.
How does the ZS4-S-OR disconnect a circuit?
The terminal block uses an integrated blade disconnect mechanism, allowing the electrical circuit to be opened for testing, commissioning or maintenance without removing the connected conductors.
What are the current and voltage ratings of the ZS4-S-OR?
The ZS4-S-OR has an IEC current rating of 25 A and an IEC voltage rating of 400 V.
What conductor sizes can the ZS4-S-OR accept?
The terminal accepts flexible and rigid stranded conductors from 0.2–4 mm², with permitted capacities varying according to conductor and ferrule configuration.
How many TE Connectivity ZS4-S-OR terminal blocks are supplied in a pack?
The ZS4-S-OR 1SNK505330R0000 is supplied in a pack quantity of 50 pieces, making it suitable for panel building, machine production and industrial electrical installation projects.
Trusted Industrial Connectivity from TE Connectivity
TE Connectivity ENTRELEC SNK disconnect terminal blocks provide panel builders, automation engineers and maintenance professionals with compact, reliable circuit connection and isolation solutions for industrial electrical and control systems.
