Square D Harmony XAC Add-On Contact Block, 1 NO, Screw Clamp Terminal
The Square D Harmony XAC add-on contact block is engineered for the Harmony family of 22 mm modular push buttons and selector switches, combining a robust snap-fit design with dependable electrical performance. This block delivers a 1 NO (13-14) contact configuration with screw clamp terminals, is rated A600 AC-15, Ue = 240 V, Ie = 3 A per IEC 947-5-1 appendix A, and carries a Ui insulation voltage of 600 V per IEC 60947-1. It snap-fits to Harmony XAPS2, XB4, XB5, and XACA operator bodies for flexible panel-building applications.
Key Features
- Contact Configuration: 1 NO (13-14) add-on contact delivers reliable signaling for push button and selector switch operators.
- Screw Clamp Terminals: accepts 1 x 2.5 mm² or 2 x 1.5 mm² conductors with or without cable ends for secure, vibration-resistant wiring.
- Contact Rating: A600 AC-15, Ue = 240 V, Ie = 3 A per IEC 947-5-1 appendix A, suited for control-circuit switching duty.
- Insulation Voltage: Ui rated 600 V per IEC 60947-1 for dependable dielectric protection.
- Impulse Withstand Voltage: Uimp rated 6 kV per IEC 60947-1.
- Mechanical Durability: rated for 1,000,000 operating cycles for long service life.
- Short-Circuit Protection: compatible with 10 A gG (gI) fuse protection cartridges.
- Compatibility: snap-fits to Harmony XAPS2, XB4, XB5, and XACA operator platforms.
Certifications & Compliance
- UL 508 Listed
- IEC 60204-32 Compliant
- IEC 60947-5-1 Compliant
- CSA C22.2 No 14 Compliant
- Class II Electrical Shock Protection per IEC 61140
- RoHS Compliant (Eur)
- Prop 65 Warning: this product can expose you to lead and lead compounds
Technical Specifications
- Toxic Heavy Metal Free: Yes
- Warranty: 18 months
- Sustainable Packaging: No
- Mercury Free: Yes
- Packaging Without Single Use Plastic: No
- Tier: 1
- ROHS Eur In Scope: No
- Recycled Metal Content At Cr Level: 0 %
- China ROHS Label: 1
- With Recycled Cardboard: Yes
- WEEE Product Category: 5
- China ROHS In Scope: Yes
- Return Indicator: Y
- Take Back: No
- Returnability: Yes
- Terminals Description Iso N 1: (13-14)NO
- Reach Free Shvc: Yes
- Ambient Air Temperature For Storage: -40-70 °C
- WD Status: 1 - GSC certified
Typical Applications
- Industrial Control Panels
- Machine Operator Interfaces
- Commercial and Industrial Automation Equipment
- Panel Builder and OEM Control Stations
- Charge Point and System Integrator Installations
Why Square D?
Square D backs the Harmony XAC add-on contact block with a robust snap-fit construction, screw clamp terminals rated for demanding control circuits, and compliance with UL 508, IEC 60947-5-1, and CSA C22.2 No 14 standards. Built for 1,000,000 mechanical cycles and a 600 V insulation rating, it delivers the reliable, code-compliant performance panel builders, electricians, and system integrators depend on.
Manufacturer Resources
Product Specs
- Product Type:
- Contact Block
- Connection Type:
- Screw Clamp
- Configuration:
- 1 NO
- Voltage Rating:
- 600V
- Amperage Rating:
- 3A
- Standards:
- UL 508
- Series:
- Harmony XAC
- Department:
- Electrical
- Product Group:
- Motor Control & Automation
- Product Subgroup:
- Push Buttons & Pilot Devices
Square D ZB2BE101 – Frequently Asked Questions
1) Will the Square D ZB2BE101 contact block fit my existing Harmony push button operator?
The ZB2BE101 add-on block snap-fits to Harmony XAPS2, XB4, XB5, and XACA operator bodies. It is built for the Harmony family of 22 mm modular push buttons and selector switches, so if your operator head is one of those 22 mm Harmony platforms it mounts directly with no adapter.
2) Is this a normally open or normally closed contact block?
One normally open contact, terminals marked 13-14. If your circuit needs a break contact (for example an e-stop or an interlock that must open on actuation), this is the wrong block and you need an NC version instead.
3) Can I switch a 240V control circuit with this contact block, and at what current?
Rated A600 AC-15 with Ue = 240 V and Ie = 3 A per IEC 947-5-1 appendix A, so a 240 V AC control circuit drawing up to 3 A is within rating. Insulation voltage Ui is 600 V and impulse withstand Uimp is 6 kV per IEC 60947-1. This is control-circuit switching duty, not a load-carrying device, so a motor should be fed through a contactor coil rather than directly.
4) Is this contact block UL listed for use in a US industrial control panel?
UL 508 Listed, and also compliant with CSA C22.2 No 14, IEC 60947-5-1, and IEC 60204-32. It carries Class II electrical shock protection per IEC 61140 and is RoHS compliant for Europe. Note the Prop 65 warning: the product can expose you to lead and lead compounds.
5) Can I use this Square D block on an Eaton M22 or E22 push button?
No. The ZB2BE101 snap-fits only to Harmony XAPS2, XB4, XB5, and XACA operator bodies. Eaton platforms such as the M22 front-mount contact/LED module or the E22 non-metallic contact block use their own mounting systems, so stay within one manufacturer's operator family when adding contacts.
6) Can an Eaton E22 contact block replace a Square D ZB2BE101 on a 22 mm panel cutout?
Both are 22 mm class devices, but they are not interchangeable across operator families. The Square D ZB2BE101 add-on contact block snap-fits to Harmony XAPS2, XB4, XB5, and XACA operator bodies, while the Eaton E22CB1 is a non-metallic heavy-duty pushbutton contact block built for the 22.5 mm E22 platform. Matching the panel hole size does not make the blocks swap; the block has to latch to the operator body it was designed for. Keep the block and the operator in the same family.
7) What wire size do the screw clamp terminals on the ZB2BE101 take?
The screw clamp terminals accept 1 x 2.5 mm2 or 2 x 1.5 mm2 conductors, with or without cable ends. That lets you daisy-chain two smaller control wires into one terminal, which is how most panel builders bridge common rails across a stack of blocks.
8) What short-circuit protection do I need upstream of this block?
It is coordinated with a 10 A gG (gI) fuse cartridge for short-circuit protection. Size the branch protection at or below that in the control circuit.
9) Do I get the push button operator with this, or just the contact block?
This is the add-on contact block alone. You order the Harmony operator head and body separately (XAPS2, XB4, XB5, or XACA), then snap this 1 NO block on to build the station. Panel builders typically stack several blocks on one operator to get the contact count a circuit needs.
10) I need a contact and an indicator light in one module - is the Square D ZB2BE101 the right part?
No. The ZB2BE101 is a contact-only add-on block in a 1 NO configuration with screw clamp terminals. If you want switching and indication in a single module, the Eaton M22 front-mount contact/LED module combines 1 contact with a blue LED. Use the ZB2BE101 when the operator already carries its own light module or none is needed.
11) How does terminal style differ between the Square D ZB2BE101 and the Eaton 10250T contact block?
The ZB2BE101 uses screw clamp terminals, which accept 1 x 2.5 mm2 or 2 x 1.5 mm2 conductors with or without cable ends. The Eaton 10250T heavy-duty pushbutton contact block uses pressure terminals. If your panel standard calls out one termination method for field wiring, that difference decides the choice as much as the operator family does.
12) How many operations will a Harmony add-on contact block take before it wears out?
Mechanical life is rated at 1,000,000 operating cycles, which is why these end up behind high-frequency machine operator stations rather than occasional-use panels. Storage temperature range is -40 to 70 C.
How fast can I get the Square D ZB2BE101 delivered?
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Does the Square D ZB2BE101 come with a warranty?
Absolutely. The Square D ZB2BE101 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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