1PC Siemens 3AY1510-5E 110V Electromagnet Coil — 3AY Series Solenoid

Siemens · 3AY Series · Operating Coil · 110V AC · 60Ω · In stock

The 3AY1510-5E (alternate catalog code 32500640106) is a 110V AC operating coil from the Siemens 3AY series — the switchgear accessory family used across SIRIUS 3RT / 3RA contactors and 3RV motor protectors in low-voltage industrial control cabinets. With a measured 60Ω cold resistance, this coil is the standard replacement part for failed or burnt-out operating coils in motor control centers (MCC), distribution panels and OEM machine builders. KOEED stocks the 3AY1510-5E as a single-piece spare, ideal for maintenance engineers and system integrators who need a fast swap to keep a production line running.

The 3AY prefix identifies this part as a Siemens switchgear accessory — not a PLC, but the electromagnetic operating coil that physically pulls in a contactor or releases a mechanism. It is commonly cross-referenced alongside spare parts for Allen-Bradley contactors, Mitsubishi S-N series, Omron contactors, and Schneider TeSys contactors — all of which share the same panel footprint inside a mixed-vendor MCC bucket.

1. Key Technical Specifications & Overview

2. Application Scenarios — Where the 3AY1510-5E Fits

The 3AY1510-5E 110V coil sits inside any cabinet that uses a SIRIUS 3RT / 3RA contactor or 3RV motor protector. Engineers reach for this part in the following scenarios:

• Motor control centers (MCC) and bucket assemblies — direct replacement when a 110V AC operating coil in a starter bucket has failed open.
• Low-voltage switchboards and power distribution panels — spare part for shunt release coils in feeder and motor-starter compartments.
• Industrial control panels and OEM machine builders — panel shops, conveyor OEMs, packaging line builders and pump skid manufacturers.
• Pump stations, HVAC systems and water treatment skids — where 110V contactor coils drive blower, damper and pump motors.
• CNC and machine tool retrofits — alongside cabinets running Fanuc or Yaskawa servo systems that still need a 110V AC contactor on the mains side.
• Vision inspection cells — cabinets housing KEYENCE vision systems and Panasonic FP PLCs that need a discrete 110V mains contactor upstream.
• Maintenance & repair shops — a one-PC spare kept on the shelf for emergency swap-out of burnt-out coils in running production equipment.

3. Integration & Wiring Notes

The 3AY1510-5E is a 110V AC electromagnet coil — it expects the same mains reference the contactor it drives is fed from. Keep the following wiring and integration points in mind before commissioning:

• Voltage match is mandatory. Only energise this coil from a regulated 110V AC 50/60 Hz source. Driving it from 220V AC will burn it out within seconds; 24V DC will not pull in the armature.
• Coil resistance check. A healthy cold coil reads approximately 60Ω across the two terminals. Readings significantly higher (open winding) or lower (shorted turn) indicate a failed coil and the part should be replaced, not re-energised.
• Suppression on parallel coils. When the 3AY1510-5E is wired in parallel with another inductive load (relays, solenoids), fit an RC snubber or varistor across the coil terminals to limit back-EMF and extend contact life.
• Mechanical seating. The coil must be fully seated into the contactor frame and the magnetic armature must move freely. A misaligned coil will hum, overheat, and trip thermal protection on the upstream breaker.
• Avoid mixing families. The 3AY1510-5E is designed for the SIRIUS 3RT/3RA coil pocket. Do not substitute it for a 3RH, 3RT, 3TF or 3UA coil without checking the dimensional drawing — pocket depths and connector pinouts differ across families.
• Cross-platform spares. When you standardise on 110V coils across a mixed-vendor cabinet (Siemens SIRIUS contactors plus Mitsubishi S-N contactors, for example), verify each contactor’s pocket dimensions before bulk-stocking 3AY1510-5E as a universal spare.
• Surge protection upstream. For installations with frequent switching, an upstream Schneider or Allen-Bradley motor protector sized to the contactor’s locked-rotor current will protect both the coil and the power wiring.

4. Installation & Commissioning Tips

The 3AY1510-5E is a drop-in spare, but a disciplined install procedure prevents the two failure modes that take out new coils prematurely: voltage mismatch and mechanical misalignment. Use this checklist when commissioning a fresh replacement.

• Lock out and tag out (LOTO) the panel before opening the contactor pocket. Confirm zero voltage at the coil terminals with a calibrated meter.
• Verify the part number on the incoming coil matches 3AY1510-5E / 32500640106 and the rated voltage is 110V AC. A wrong-voltage spare is the single most common cause of a smoked coil on first power-up.
• Measure the cold resistance across the coil terminals. Expect approximately 60Ω at room temperature. Anything outside 55–65Ω suggests a damaged winding and the part should not be installed.
• Seat the coil squarely into the contactor frame. The spring clips must engage on both sides; the coil body should sit flush with no rocking. A loose coil will buzz, overheat and fail.
• Re-apply power and listen. A healthy coil pulls in crisply with a single mechanical thunk. A humming or chattering coil indicates low voltage, a weak spring or contaminated pole faces — investigate before leaving the panel in service.
• Check contactor auxiliary operation. Verify the normally-open and normally-closed auxiliaries transfer correctly when the coil energises. A sluggish armature can burn the coil long before the auxiliary contacts ever move.
• Log the replacement. Record the date, panel ID, coil serial and installer initials. This becomes the baseline for the next scheduled inspection and helps trace a recurring failure back to a specific vendor lot if a recall is ever issued.
• Pair with the right diagnostic tool. If a downstream Omron SYSMAC or Panasonic FP PLC keeps flagging a contactor fault, run the cabinet through the AI Diagnostic Tool to separate a coil failure from a sensor or wiring fault before swapping the part.

5. Procurement, Warranty & Lead Time

KOEED is a multi-brand industrial automation sourcing partner — not an authorised OEM subsidiary. We supply genuine, inspected 3AY series coils alongside spares for Allen-Bradley, Siemens, Mitsubishi, Omron, Fanuc, Schneider, Yaskawa, Panasonic and KEYENCE systems, with a focus on hard-to-find, EOL and slow-moving catalog numbers that the OEM channel can no longer deliver on a reasonable lead time.

• Quote within 24 hours. Send a single part number or a full BOM to Moritta@KOEED.COM and our sourcing team comes back with availability, lead time and unit price the same business day.
• BOM-level quotation. If you need the 3AY1510-5E plus the matching SIRIUS contactor, a 3RV motor protector, or any related spares from the same all-collection index, send the full instrument list in one email and we will quote the lot in a single response.
• Pre-shipment testing. Every coil is checked for continuity and approximate cold resistance before shipment. A failed unit is replaced, not refunded in kind.
• Worldwide shipping. We ship to North America, Europe, the Middle East, South-East Asia and South America via DHL, FedEx and UPS with full export documentation. Carriers are selected for the shortest customs-clearance time on industrial parts.
• No minimum order quantity. The 3AY1510-5E is sold as a single piece for maintenance spares, and at quantity pricing for panel builders stocking up — just ask for a tier quote via Moritta@KOEED.COM.
• Standard warranty. 12-month warranty against manufacturing defects, in line with our return policy and shipping policy.
• Hard-to-find specialists. If the 3AY1510-5E is the wrong variant for your panel, send the part number stamped on the failed coil and we will cross-reference it against equivalent Siemens, ABB or Schneider SKUs from our current stock list.

Related Coils & Cross-Reference

The 3AY1510-5E is the 110V AC variant of the 3AY1510 family. Other common voltages in the same mechanical pocket, plus the contactors and protectors it pairs with, are listed below. For an equivalent coil from another vendor, send the part number stamped on the failed coil to Moritta@KOEED.COM and we will cross-reference it.