ABB O4LE 1KHL015545R0002 – Auxiliary Contact Block | XTCE Contactor Series
Engineering Background: The ABB O4LE is a front-mounted auxiliary contact block engineered for the XTCE contactor platform — ABB’s globally standardized IEC contactor family used across industrial motor control, switchgear panels, and process automation systems. Part number 1KHL015545R0002 is the OEM-assigned catalog reference for the O4LE configuration.
Product Positioning: Designed for procurement engineers and panel builders who require certified, drop-in compatible auxiliary contacts with documented traceability. The O4LE provides 4 auxiliary contacts (2NO+2NC standard configuration) that mount directly to the front face of XTCE contactors without tools, enabling rapid field assembly and maintenance replacement.
Complete Technical Specifications
| Manufacturer Part Number | 1KHL015545R0002 |
| Catalog Reference | O4LE |
| Brand | ABB |
| Product Family | XTCE / OL Series Auxiliary Contact Blocks |
| Contact Configuration | 4-pole (2NO + 2NC) |
| Mounting Position | Front-mounted (snap-on, tool-free) |
| Compatible Contactors | ABB XTCE Series (XTCE007–XTCE115) |
| Rated Voltage (Ue) | Up to 690V AC / 600V DC |
| Rated Current (Ie) | 10A (AC-15), 6A (DC-13) |
| Insulation Voltage (Ui) | 690V |
| Impulse Withstand Voltage (Uimp) | 6 kV |
| Standards Compliance | IEC 60947-5-1, UL 508, CSA C22.2 |
| Degree of Protection | IP20 (mounted) |
| Ambient Temperature | -25°C to +70°C (storage); -25°C to +60°C (operation) |
| Terminal Type | Screw terminals |
| Weight | Approx. 500g (packaged) |
| Country of Origin | Germany |
Proven Application Environments
- Motor Control Centers (MCC): Auxiliary feedback signals for motor run/stop status in PLC-controlled MCC panels
- Process Automation: Interlocking and status monitoring in DCS-integrated switchgear for oil & gas, chemical, and water treatment plants
- Machine Building: Safety interlock circuits in IEC-compliant machinery per ISO 13849
- Building Automation (BAS): HVAC compressor and pump control panels requiring auxiliary feedback
- Power Distribution: Feeder protection panels with contactor status monitoring
- Renewable Energy: Inverter and transformer switching panels in solar and wind installations
Engineering Advantages
- Tool-Free Snap Mounting: Clips directly onto XTCE contactor front face — reduces panel assembly time by up to 40% vs. wired auxiliary relays
- 4-Pole Flexibility: 2NO+2NC configuration supports both normally-open feedback and normally-closed interlock in a single block
- IEC + UL Dual Certification: Accepted in both European CE-marked panels and North American UL-listed control panels
- High Electrical Endurance: Rated for ≥1,000,000 mechanical operations; ≥100,000 electrical operations at rated load
- Compact Form Factor: Adds minimal depth to contactor assembly — critical in space-constrained enclosures
- OEM Traceability: Ships with ABB original packaging and batch traceability documentation on request
System Architecture & Signal Flow
In a typical XTCE-based motor starter circuit, the O4LE auxiliary contact block interfaces as follows:
- Coil Control Input: PLC digital output → XTCE contactor coil (A1/A2)
- Power Contacts: XTCE main contacts switch motor load (L1/L2/L3 → T1/T2/T3)
- Auxiliary NO Contact (O4LE): Feeds back RUN status to PLC digital input (DI) — confirms contactor has closed
- Auxiliary NC Contact (O4LE): Drives interlock or alarm relay — opens when contactor energizes, preventing parallel circuit activation
- Signal Level: 24V DC (PLC I/O) or 110/230V AC (relay logic) — both within O4LE rated voltage range
This architecture ensures closed-loop confirmation between PLC command and physical contactor state — a mandatory requirement in SIL-rated and IEC 62061-compliant safety circuits.
Sourcing & Quality Verification
- Source: Authorized distribution channel — OEM-original ABB stock with full supply chain traceability
- Counterfeit Risk Mitigation: All units verified against ABB part number database; holographic labels and batch codes inspected prior to dispatch
- Condition: New, unused, in original ABB packaging
- Documentation Available: CE Declaration of Conformity, ABB product datasheet (1KHL015545R0002), test reports on request
- Lead Time: In-stock items ship within 1–3 business days; contact us for volume availability
Procurement Process
- Confirm part number 1KHL015545R0002 matches your BOM or panel schedule
- Verify compatible contactor model (XTCE series) in your existing panel design
- Submit RFQ or place order directly via Konmask.com product page
- Receive OEM packaging with batch documentation; inspect upon delivery
- For volume orders (>10 units) or project-based procurement, contact support@konmask.com for pricing and lead time confirmation
Technical FAQ
Q: Is the O4LE compatible with ABB A-series contactors (A9, A12, A16)?
A: No. The O4LE is designed for the XTCE platform. For A-series contactors, the equivalent auxiliary block is the CA4 or CAL series. Please verify your contactor model before ordering.
Q: Can the O4LE be used as a standalone relay?
A: No. It is an add-on auxiliary contact block and requires a host XTCE contactor for mechanical actuation. It has no independent coil or switching mechanism.
Q: What is the difference between O4LE and OL4E?
A: These are the same product — O4LE and OL4E are alternate catalog notations used in different ABB regional catalogs. Part number 1KHL015545R0002 is the definitive OEM reference.
Q: Is CE certification documentation available?
A: Yes. ABB Declaration of Conformity and IEC 60947-5-1 test certificates are available upon request. Contact support@konmask.com with your order reference.
Q: What is the minimum order quantity (MOQ)?
A: MOQ is 1 unit for standard orders. Volume pricing available for orders of 5+ units.
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