Schneider Electric ZB2BE101 ZB2 Contact Block, 1 NO

ZB2BE101: 1 NO contact block for XB4 and XB5 style stations

The ZB2BE101 is a Schneider Electric Harmony XAC contact block of the ZB2 family, carrying a single NO (1 NO) contact on terminals 13-14. It mounts at the front of its operator and is designed for spring-return operators, so the contact follows the button: the contact closes on press and opens on release. Seven Star LLC supplies the ZB2BE101 in Oman and the GCC as an independent supplier in Muscat, often for panel builders who are renewing worn contacts on control stations that have to stay in service.

The datasheet title is only the words CONTACT BLOCK, so the part number is the reliable identifier. Its digit code is not explained on the datasheet, and the contact action of ZB2BE101 is confirmed by the Contacts type and composition entry (1 NO) and by the ISO terminal marking (13-14)NO. The sibling with the opposite action is ZB2BE102.

Environmental data for the ZB2BE101

The block is rated for -25 to 70 °C in service and -40 to 70 °C in storage, with vibration resistance of 15 gn from 10 to 500 Hz and electric shock protection class II. The listed standards are IEC 60947-5-1, IEC 60204-32, UL 508 and CSA C22.2 No 14. No IP rating or product certification line is given on this datasheet for the block alone, so ingress protection depends on the operator and enclosure that surround it.

In a hot climate the practical limit is the temperature inside the enclosure, not the outdoor ambient. A cabinet in direct sun can run far above the air temperature, so measure or estimate it before relying on the upper limit, and keep contact blocks away from heat sources such as braking resistors and power supplies.

Fitting and wiring the ZB2BE101

Terminals are screw clamps accepting one conductor of 2.5 mm² or two conductors of 1.5 mm², with or without cable ends. The body is small, with a net weight of 0.02 kg and a packaged size of about 4 × 4 × 2 cm for one unit. The block is fitted from the front of the operator unit, so it can be changed without dismantling the rear of the panel, which suits maintenance teams who work on stations that cannot be shut down for long.

Check the compatibility list on the datasheet before ordering for a given operator: this reference lists XB4, XAPS2, XACA and XB5. Do not assume that a block fits a head of another range just because it looks similar, and check the real operator when replacing parts on older stations.

Pairing ZB2BE101 with ZB2BE102

A control station that needs both a make and a break contact stacks one ZB2BE101 with one ZB2BE102, giving the familiar 1 NO plus NC arrangement. Keep the same order on every station so that a technician can identify the contacts by position, and mark the terminals ((13-14)NO) on the drawing so that a later replacement does not reverse the action.

Typical sites include pump houses, motor control centres, water treatment skids, desalination auxiliaries and process packages in Oman and the GCC, where operator stations take daily use and a worn block can stop a plant start. Keeping a few spare ZB2BE101 units in the store is a cheap precaution.

Contact action and circuit logic of the ZB2BE101

With the normally open contact the circuit is open at rest and closes while the operator is pressed and held. It is the make element of a start button, a jog button or a command to a PLC input. The datasheet describes the operation as slow-break and the circuit type as control circuit, single speed, which means the block is intended for ordinary command signals, not for fast-switching or multi-speed duty.

Operating force is 13 to 15 N at the contact, and the datasheet gives a maximum resistance across the terminals of 25 MΩ, a figure that confirms the contact is meant to be a clean on/off element rather than a measuring device. Since the block works in start, jog and acknowledge commands, wire it so that the intended safe state corresponds to the way the contact rests.

Technical specifications of the ZB2BE101

Selection checklist and RFQ information for ZB2BE101

Send the following with your enquiry so that we can match the part number with the datasheet and confirm availability in one reply.

• Part number ZB2BE101 and the quantity required.
• The contact action needed (NO or NC), and whether the sibling block is also needed.
• The load: voltage, current and whether AC or DC, against the AC-15 and DC-13 ratings.
• The operator or head it will be fitted to, checked against the compatible products on the datasheet.
• A photo of the existing block and its nameplate when replacing.
• Any project approval needed, compared with the standards on the datasheet.
• Delivery location in Oman or the GCC and the lead time needed.

Load ratings of the ZB2BE101

The datasheet quotes a conventional enclosed thermal current of 10 A and utilisation ratings of 3 A at 240 V and 1.2 A at 600 V in AC-15, and 0.27 A at 250 V and 0.1 A at 600 V in DC-13. For DC loads at lower voltage, rated power is stated for one million cycles at 40 W at 120 V, 48 W at 48 V and 65 W at 24 V, at a load factor of 0.5 and below 3600 cycles per hour. These ratings tell the designer how much a coil, solenoid or lamp load the block can handle before contact life starts to fall below the stated durability of 1000000 mechanical cycles.

A 10 A cartridge fuse of type gG protects the block against short-circuit, as required by the datasheet. As on any control contact, the thermal current is a heating limit and not an invitation to switch a 10 A load, so use contactors for power and keep the ZB2BE101 for coils and signals.

Documents and quotation

The Schneider Electric datasheet for the ZB2BE101 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.