Schneider Electric ZB5AD3 Black 3-Position Selector Switch Head

ZB5AD3: black 3-position stay-put selector switch head

The ZB5AD3 is a Schneider Electric Harmony XB5 selector switch head for a 22 mm panel hole. It is a head only, listed as a basic element, and the contact blocks are chosen separately. Seven Star LLC supplies the ZB5AD3 in Oman and the GCC as an independent supplier based in Muscat, usually to panel builders completing control stations.

The datasheet title reads “black selector switch head Ø22 3- position stay put”, and the device short name is ZB5. Three maintained positions at +/- 45 degrees, so the handle rests left, centre or right. The centre position is a true resting state, not a spring return.

Panel cut-out and anti-rotation for ZB5AD3 and sealing

The datasheet specifies the panel hole as 22.5 mm recommended, with a finished-hole tolerance written as 22.3 mm plus 0.4 mm. For connection by screw clamp terminals or plug-in connectors it asks for a fixing centre of at least 40 × 30 mm, for Faston connectors 45 × 32 mm and for printed-circuit-board connection 30 × 30 mm. For this kind of operator the datasheet recommends the anti-rotation plate ZB5AZ902, which fits in the lug recess of the hole so the head cannot turn when it is operated.

The head weighs 0.017 kg. Tighten the fixing collar evenly and check the handle turns freely through all positions after the blocks are fitted.

The datasheet lists protection of IP67, IP69, IP69K, an impact rating of IK06, and UL type 4X/13 enclosure use. The datasheet also quotes resistance to a high-pressure washer of 7000000 Pa at 55 °C from a distance of 0.1 m.

Approvals listed on the datasheet are DNV, CSA, BV, LROS (Lloyd’s Register), UL listed. As ever, accept a marine or UL requirement for the ZB5AD3 only where it is printed for this exact reference.

Operation and contact-block combinations

The ZB5AD3 has a type of operator listed as stay put, with mechanical durability of 1000000 cycles. The electrical composition codes in the datasheet are C3, C4, C5, C6, C7, C8, C11, SF1, SR1. These codes describe how many single or double contact blocks may sit behind the head: for example the datasheet lists C3 as fewer than six contacts using single blocks in front mounting, and SF1 and SR1 for front and rear mounting.

Depth behind the panel is 46 mm for the head alone, which is longer than a flush push-button head because of the handle mechanism, so allow for it behind the door.

Where ZB5AD3 is used

Typical duty is a hand-off-auto choice for a pump or fan, a manual-zero-automatic mode selector, or a direction selector where a neutral middle position is required.

The operator profile in the datasheet is Black standard handle, with 3 positions ± 45°. Position order and spring action should be confirmed against the contact-block truth table of the circuit you are building, since the head and the block together define the logic.

Typical uses in Oman and the GCC

Selector heads of this kind are normally found on motor control centres, pump stations, ventilation panels and machine desks across the region. In oil and gas and petrochemical sites they sit on local control stations; in power and desalination plants they set manual or automatic mode on auxiliary equipment. The sealing ratings and wide temperature range in the datasheet are what allow the ZB5AD3 to survive hot, dusty or wash-down conditions.

Installation and maintenance notes

Install the head from the front, engage the lug and anti-rotation plate, then clamp the collar from behind. Mark the position legend on a nameplate that matches the actual handle positions, test every position with a meter, and label spare blocks. In service, check for loose collars, damaged handles and moisture behind the panel, especially on outdoor stations around the this unit.

Technical specifications of the ZB5AD3

Selector family around ZB5AD3

This lane contains a plain handle family, two key-lock versions, an illuminated handle and a potentiometer base. They share the same 22 mm fixing but differ by action and position count.

Selection checklist and RFQ information for ZB5AD3

Send the points below so that the part number can be confirmed against the datasheet and checked for availability in one reply.

• Part number this unit and the required quantity.
• The number of positions, and which are maintained and which spring back.
• The contact blocks you plan to fit behind it.
• Whether a key or colour legend is needed, checked against the datasheet.
• Panel thickness and anti-rotation arrangement.
• Any approval needed by the project, compared with the datasheet list.
• Delivery location in Oman or the GCC and the lead time you need.

Documents and quotation

The Schneider Electric datasheet for the ZB5AD3 is attached on this page for your technical file. It holds the data summarised above together with panel cut-out and dimension drawings.

To request a quotation, send the part number and quantity through the enquiry form and we will reply with availability and delivery terms. Seven Star LLC is an independent supplier and does not act for the manufacturer, so please check the datasheet against your project requirements before ordering.