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Schneider Electric Contact Block - Harmony XAL Series - ZENL1121

Schneider Electric Contact Block - Harmony XAL Series - ZENL1121

This Schneider Electric contact block features a single contact for head 22 silver alloy screw cla...

Best current price£6.08from eBay

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Product Information

Full details

This Schneider Electric ZENL1121 contact block is designed for control and signaling units, offering a single Normally Closed (NC) contact for 22mm diameter systems. It provides reliable electrical connections via screw terminals and is ideal for front-mounting applications within the Harmony XAL Series. While its compact design and durable silver alloy contacts are beneficial, users should note its specific NC configuration, meaning it's suited for circuits requiring a break on actuation.

All features

SeriesHarmony XAL
Model Part NumberZENL1121
BrandSchneider Electric

Extended Product Information

FAQs

What does 'NC' mean for this contact block?

'NC' stands for Normally Closed. This means the contact is closed (allowing current to flow) when the actuator is not pressed or in its default state. It opens (breaks the circuit) when actuated.

Can I use this contact block with 30mm pushbuttons?

No, this contact block is specifically designed for 22mm diameter control and signaling units in the Harmony XAL and XB5 series. It will not fit 30mm units.

What is the IP rating of this contact block?

The IP rating is IP20. This means it is protected against solid objects larger than 12.5mm (like a finger) but offers no protection against water ingress.

How many NO (Normally Open) contacts does this block have?

This specific contact block (ZENL1121) has 0 Normally Open (NO) contacts and 1 Normally Closed (NC) contact.

What type of terminals does it use?

It uses screw clamp terminals for electrical connections.

What is the maximum voltage and current rating?

The rated voltage is 600V and the rated current is 10A.

Can I mount this block on the rear of any Schneider Electric switch head?

No, it is designed for specific Schneider Electric XB5 22mm diameter control and signaling units and XAPS control stations.

Troubleshooting

Contact block not making/breaking circuit

Verify wiring connections to the screw terminals are secure. Ensure the contact block is properly seated on the switch head. Check if the connected actuator (e.g., pushbutton) is functioning correctly and actuating the contact block.

Loose wire connection

Ensure the wire conductor is inserted fully into the screw clamp terminal and the screw is tightened firmly. Re-strip wire if necessary and re-insert.

Difficulty mounting contact block

Confirm you are using a compatible 22mm control unit head. Ensure no obstructions are present in the mounting slot. Apply firm, even pressure when pushing the block into place.

Pros and Cons

Pros

  • Compact and easy to install on 22mm control units.
  • Durable silver alloy contacts ensure longevity.
  • Reliable screw clamp terminals for secure connections.
  • Clear NC configuration for specific circuit control needs.
  • Compatible with Schneider Electric's Harmony XAL and XB5 series.

Cons

  • Only provides a single NC contact; not suitable for applications requiring NO contacts.
  • IP20 rating offers limited protection against environmental factors.
  • Requires specific 22mm mounting holes.
  • Slow-break mechanism may not be suitable for all high-speed switching applications.

Setup, Compatibility & Care

Setup:

  1. Ensure power to the control unit is disconnected.
  2. Align the contact block with the mounting opening on the rear of a compatible pushbutton or switch head.
  3. Push the contact block firmly until it clicks into place.
  4. Connect wires to the screw clamp terminals according to your circuit diagram. Ensure conductors are stripped to the correct length and securely fastened.

Compatibility:

  • This contact block is designed for Schneider Electric XB5 22mm diameter control and signaling units.
  • It is also compatible with XAPS control stations.
  • It is part of the Harmony XAL Series.

Care:

  • Keep the contact block clean and free from dust and debris. Use a dry or slightly damp cloth for cleaning; avoid solvents.
  • Periodically check screw terminal connections for tightness, especially in environments with vibration.
  • Ensure the IP20 rating is sufficient for the operating environment; if not, consider a more protected enclosure.

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