OVERVIEW

Official designation: BERNSTEIN I88-SU1Z RIWK (I88 Series, Limit Switch)

Role/Application: Plastic-bodied position switch for reliable detection in machine safety, automation, and conveyor systems, offering snap action switching and M20 cable entry.

KEY SPECS SUMMARY

Power: Rated Insulation Voltage 250 V AC

Interfaces / Ports: M20 x 1.5 cable entry, screw terminals

Indicators: None

Operating Temp: Minus 30 degrees C to plus 80 degrees C

Platform / Compatibility: Housing GRP thermoplastic, IP65 protection

Limit: Mechanical life 10 million cycles, 1NO / 1NC contacts

Lifecycle: Active

FREQUENTLY ASKED QUESTIONS

Technical Specifications:

Q: What is the maximum rated operational voltage and current for the I88-SU1Z switch?

A: Maximum rated voltage is 240 V AC, with a maximum contact current of 3 A or 10 A (varies by model/revision).

Wiring & Installation:

Q: How is the actuator installed and what are the terminal designations used for wiring?

A: The actuator can be repositioned at 4 times 90 degrees; terminals use function digits 1-2 for NC and 3-4 for NO.

Troubleshooting & Compatibility:

Q: What material is the switch housing made from and what is its flammability rating?

A: The housing and lid are made of PA 6 thermoplastic that is self-extinguishing (UL 94-V0 rated).

Replacement & Upgrades:

Q: Is the I88-SU1Z RIWK a force-separated contact switch for safety applications?

A: Yes, all normally closed (NC) contacts feature positive break or forced disconnection.