Schneider Electric ZA2EE101 XA2 Contact Block, 1 NO

ZA2EE101: single 1 NO contact block for XA2 heads

The ZA2EE101 is a Schneider Electric Harmony XA2 contact block with one NO (1 NO) contact. It is the electrical half of a modular control station: the operator head sits in the panel door, and the block behind it carries the contact that the control circuit actually uses. Seven Star LLC supplies the ZA2EE101 in Oman and the GCC as an independent supplier in Muscat, mostly to panel builders and maintenance stores that rebuild or extend existing XA2 stations.

The datasheet lists the item as a single block with standard contacts, and the nameplate on the product photo repeats the reference together with the ratings AC15 240 V/3 A, Ith 10 A, Ui 600 V and Uimp 6 kV, plus the terminal numbers 3-4. On ZA2EE101, the ZA2E component name and the 1 NO composition are what separate this block from its opposite-action sibling ZA2EE102.

Wiring and mounting of the ZA2EE101

The block offers two connection styles on the same terminal: screw clamp or 6.3 mm Faston. In the screw version the datasheet allows up to two conductors of 1.5 mm², or up to one conductor of 2.5 mm² and down to 0.5 mm², tightened to 0.8 N.m. Fastons help on factory lines where harnesses are pre-crimped, and screws help on site where a cable needs to be changed in a hurry.

The packaged unit is a single block in a small carton, and the product is rated IP20 on its own. That rating applies to the finger-safe block, not to the station; the sealing of the finished control station depends on the head and the panel, not on this block. Fit the block behind the head following the head instructions and confirm that the contact action matches the schematic before closing the door.

Selection checklist and RFQ information for ZA2EE101

Send these details with the enquiry so that the part number can be confirmed against the datasheet in one reply.

• Part number ZA2EE101 and the quantity required.
• The contact action you need (NO or NC) and whether you also need the sibling block.
• The control voltage and current the contact will switch, compared with 2 A at 230 V AC-15 or 0.2 A at 110 V DC-13.
• The head or station type the block will be fitted behind, with a photo of any block being replaced.
• Terminal style needed in the field (screw or Faston) and wire size.
• Any project approval needed, compared with the CE and CCC listing.
• Delivery location in Oman or the GCC and the lead time you need.

Ratings of the ZA2EE101 and what they allow

The block is a control-circuit device. The rated operational current is 2 A at 230 V in utilisation category AC-15, which covers contactor and relay coils, and 0.2 A at 110 V in DC-13, which covers small solenoids and DC relays. Electrical durability is stated as 500000 cycles at those loads at under 60 operations per minute with a load factor of 0.5, against a mechanical durability of 1500000 cycles. In plain terms, the more current and the higher the duty rate, the sooner the contacts wear, so size the load to stay well within these figures.

The datasheet requires short-circuit protection with a 10 A type gL fuse. The thermal current is 10 A, but that is a heating limit and not a switching rating, and it should not be read as permission to switch a 10 A load. For heavier loads, use the ZA2EE101 to drive a contactor instead of switching the load directly.

Pairing the ZA2EE101 with ZA2EE102 and the XA2 range

A single block gives one contact. When a station needs both a make and a break, designers stack one ZA2EE101 with one ZA2EE102, giving a 1 NO plus NC pair on the same head. The order matters for wiring clarity: keep the NO and NC blocks in a consistent position from station to station so that maintenance staff can read the stack without opening the drawing.

The datasheet places the product in the Harmony XA2 range and does not list compatible heads on the page, so the choice of head should be confirmed from the head datasheet and the XA2 catalogue, not assumed from the name. If you are matching an existing station, a photo of the old block and its nameplate is the most reliable way to confirm the replacement.

Technical specifications of the ZA2EE101

Typical uses in Oman and the GCC

A block of this type, such as the ZA2EE101, serves as a start input to a relay coil or a PLC input, or the signal contact of a selector position. It appears on motor control centres, pump and fan control stations, local control boxes, packaged skids and machine panels across oil and gas, power, desalination and water treatment sites. The datasheet gives an operating range of -25 to 55 °C, which is narrower than the upper limit of many XB4 and XB5 parts, so a block fitted in a panel exposed to direct sun or to heat from nearby equipment should be checked against the real cabinet temperature, not the ambient figure.

Dust and humidity do not reach the contacts of a sealed station, but a block with open terminals inside a wet cabinet will corrode faster than one inside a dry enclosure. Keep the block clean, keep the terminals tight and keep spare blocks in the store, since the part is small, inexpensive in comparison with the equipment it controls, and a common cause of avoidable stoppages when it fails.

How the ZA2EE101 behaves in a circuit

With one normally open contact the block can only complete a circuit while the operator drives it. That fits a start command, a run request to a contactor coil or a digital input that must stay low until someone acts. The contact closes when the head is operated and opens again on release, and the datasheet describes the action as slow-break, meaning the contacts separate at the speed of the operator rather than snapping. Slow-break contacts are well suited to ordinary relay and PLC control circuits, and the contact material is silver alloy (Ag/Ni).

On the {ZA2EE101}, a broken wire or a missing block simply reads as no command, which is the safe default for a start signal but not for a stop or an interlock.

Documents and quotation

The Schneider Electric datasheet for the ZA2EE101 is attached on this page for your technical file. It holds the electrical, mechanical and environmental data summarised above, with the drawings and packaging data.

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.