Weidmuller NTI SAK 4 32 Specialty Control Systems Instruction Manual

: June 4, 2024
: Weidmuller

Table of Contents

Modular Terminal Blocks: SAK 4
IECEx / ATEX / UKCA Terminal and Cross-Connection Arrangements
- Application Case
Documents / Resources

Weidmuller NTI SAK 4 32 Specialty Control Systems

Standards:
EN IEC 60079-0:2018 and EN 60079-7:2015 A1:2018
IEC 60079-0: 7th Edition and IEC 60079-7: 5.1th Edition

Modular Terminal Blocks: SAK 4

		Order No
Version:	SAK 4
SAK 4 BL	0128360000

0128380000
in conjunction with:| EK 4| 035456000

Insulation material:

– Type
– Tracking resistance (A) to IEC 60112
– Flammability class to UL 94| PA
CTI ≥ 600
V2
---|---
– Operating temperature range
– Ambient temperature range
– Ambient temperature range
– Ambient temperature range| -50°C to +85°C (insulating material limit)
-50°C…+40°C (for T6 applications)
-50°C…+45°C (for T5 applications)
-50°C…+45°C (for T4 applications)

in all colours

Technical data according to IEC/EN 60079-7 (increased safety “eb”)

	SAK 4	EK 4
– Rated voltage	550 V
– Rated current	32 A
– Temperature rise with rated current	≤ 40 K / 32 A
– Rated current with cross connection	32 A
– Contact resistance with rated conductor	0,2 mΩ	0,4 mΩ
– Conductor cross section solid	0,5 – 6 mm²	0,5 – 6 mm²
– Conductor cross section stranded	1,5 – 4 mm²	1,5 – 4 mm²
– Conductor cross section flexible	0,5 – 4 mm²	0,5 – 4 mm²
– cross section, American Wire Gauge	22 – 10 AWG	22 – 10 AWG
– Tightening torque range, terminal screw	0,5 – 1 Nm	0,5 – 1 Nm
– Tightening torque range, fixing screw	—	0,5 – 1 Nm
– Tightening torque range for cross connection	0,5 – 1 Nm	—
– Stripping length	12 mm	12 mm

IECEx / ATEX / UKCA Terminal and Cross-Connection Arrangements

Max voltage data according to IEC/EN 60079-7 in conjunction with protective earth terminal blocks of the SAK-Series, (increased safety “eb”):

Note: Please use the end plate AP SAK4-10

Application Case

Information for further cross-connector arrangements will be provided on request.

Note:
If smaller cross sections than the rated cross section are used, the belonging lower current has to be laid down in the IECEx/EC-Type Examination Certificate of the complete apparatus.

Mounting instructions:
Regarding the use of accessories the instructions of the manufacturer must be followed.

Schedule of Limitations:
The SAK/EK-series products are suitable for use in enclosures in atmospheres with flammable gases or combustible dust. For flammable gases these enclosures must satisfy the requirements according to IEC/EN60079-0 and IEC/EN60079-7. For combustible dust the enclosure must satisfy the requirements according to IEC/EN60079-0 and IEC/EN60079-31.

The enclosure shall be constructed to block all sun and UV light from affecting the terminal blocks. The terminal blocks shall be placed inside a suitable certified IP54 enclosure in type of protection “eb” for gas atmosphere. For dust atmosphere the terminal blocks shall be mounted inside a suitable certified enclosure (IEC/EN60079-31) in type of protection “t”.

Under normal operating conditions the temperature rise of the terminal blocks is maximum 40 K, measured at the maximum permitted rated current. Due to the above mentioned, the terminal blocks may be used in apparatus of temperature classes T6..T1 as long as the terminal block ambient temperature range is not exceeded. No part of terminal block must exceed 85°C under any condition.

Ambient temperature
T6 (- 50°C … +40 °C)
T5 (- 50°C … +45 °C)
T4 (- 50°C … +45 °C)

When using the SAK/EK-series products especially with other terminal blocks series or sizes or accessories the requirements for clearance and creepage distances according to IEC/EN60079-7 must be observed. Regarding the use of covers, cross-connectors and end brackets the instructions of the manufacturer must be followed.

For cross connection accessories current rating, resistance across the terminal please refer to the table under “technical data” above.

No other wire sizes or types than the ones specified in instructions must be used. The terminal blocks must either be mounted next to another block of the same type and size or with an end plate.

If smaller conductor cross sections than the rated conductor cross sections are used, then the corresponding lower current shall be stated in the Certificate of the complete apparatus.

Unused terminals shall be tighted.

Essential Health and Safety Requirements:
Concerning ESRs this Schedule verifies compliance with the Annex II of ATEX / Schedule 1 of UKCA directive and Equipment and Protective Systems Intended for Use in Potentially Explosive Atmospheres Regulations 2016 only. By placing the product on the market, the manufacturer declares compliance with other relevant Directives, and all other safety related requirements including those of Annex II / Schedule 1 of these Directives.

Weidmüller Interface GmbH Co. KG; Klingenbergstraße 26, 32758 Detmold- Germany

Documents / Resources

| Weidmuller NTI SAK 4 32 Specialty Control Systems [pdf] Instruction Manual
NTI SAK 4 32, Specialty Control Systems, Control Systems, NTI SAK 4 32, Specialty Control
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