Siemens 3RT2026-1AG20 AC Power Contactor 25A 3-Pole | Replacement, Equivalent & Selection Guide
The Siemens 3RT2026-1AG20 is a 3-pole AC power contactor from the SIRIUS 3RT2 series, rated at 25A (AC-3) with a 110V AC control coil. Designed for motor switching and industrial load control, it is widely used in automation panels, MCC cabinets, and OEM machinery. At Konmask.com, we supply genuine Siemens units alongside verified compatible replacements to help engineers make confident sourcing decisions.
Technical Specifications
- Part Number: 3RT2026-1AG20
- Brand: Siemens
- Series: SIRIUS 3RT2
- Rated Current (AC-3): 25 A
- Rated Power (AC-3, 400V): 11 kW
- Poles: 3-pole (main contacts)
- Auxiliary Contacts: 1 NO + 1 NC (integrated)
- Control Coil Voltage: 110 V AC, 50/60 Hz
- Coil Code: AG20 (110 V AC)
- Mounting: DIN rail (35 mm) or screw mounting
- Enclosure: Open type (IP20 terminals)
- Standards: IEC 60947-4-1, UL 508, CSA C22.2
- Operating Temperature: -25°C to +60°C
- Weight: Approx. 200 g
Compatible Replacement & Equivalent Models
When the original 3RT2026-1AG20 is unavailable or a cost-effective alternative is required, the following models offer functional equivalence. Always verify coil voltage, current rating, and auxiliary contact configuration before substitution.
- Siemens 3RT2026-1AG20 — Original OEM unit (this listing)
- Siemens 3RT1026-1AG20 — Previous generation (3RT1 series), same rating, direct drop-in for most applications
- ABB A26-30-10 (110V AC) — ABB equivalent, 25A AC-3, 3-pole, 110V coil; verify terminal pitch before installation
- Schneider LC1D25 (110V AC coil: LC1D25F7) — TeSys D series equivalent, 25A, 3-pole, 110V AC; widely available globally
- Eaton DILM25-10 (110V AC) — Moeller/Eaton equivalent, 25A, 3-pole; confirm auxiliary contact layout
- Chint NC1-2510 (110V AC) — Economy-grade alternative for non-critical applications; IEC rated
Note: Third-party replacements may differ in terminal labeling, coil inrush characteristics, or mechanical dimensions. Konmask recommends testing in a non-production environment before full deployment.
Why Choose the Original Model
- Guaranteed interoperability with Siemens SIRIUS control gear (3RV2 circuit breakers, 3RU2 overload relays, 3RA2 combination starters)
- Certified performance under IEC, UL, and CSA standards with full traceability
- Long service life: rated for up to 10 million mechanical operations
- Plug-in auxiliary contact blocks (3RH2911 series) for easy field expansion
- Consistent coil inrush/hold ratios critical for sensitive PLC output modules
Typical Applications
- Motor starter circuits for pumps, fans, compressors (up to 11 kW / 400V)
- Reversing contactor pairs in conveyor and hoist systems
- Star-delta (Y-Δ) starter assemblies
- Lighting and heating load switching in industrial panels
- OEM machine tool control cabinets
- Building automation and HVAC control panels
System Compatibility
- Overload Relay: Siemens 3RU2126 (direct coupling, no adapter required)
- Circuit Breaker: Siemens 3RV2021 (SIRIUS combination starter)
- Auxiliary Contact Block: 3RH2911-1HA01 (1 NO), 3RH2911-1HA11 (1 NO + 1 NC)
- Surge Suppressor: 3RT2916-1BB00 (RC element, 24–48V) / 3RT2916-1CB00 (110–240V AC)
- PLC Output Compatibility: Suitable for relay output modules; for transistor outputs, use an interposing relay
- DIN Rail: Standard 35 mm EN 60715
Selection Guide
Use the table below to identify the correct 3RT2026 variant for your coil voltage requirement:
- 3RT2026-1AB00 — 24 V AC coil
- 3RT2026-1AF00 — 110 V AC, 50 Hz only
- 3RT2026-1AG20 — 110 V AC, 50/60 Hz ✓ (this model)
- 3RT2026-1AK60 — 120 V AC, 60 Hz
- 3RT2026-1AL20 — 230 V AC, 50/60 Hz
- 3RT2026-1AN20 — 400 V AC, 50/60 Hz
- 3RT2026-1BB40 — 24 V DC coil
- 3RT2026-1BW40 — 48 V DC coil
Tip: The coil voltage suffix is encoded in the last 4 characters of the part number. Contact Konmask if you need a voltage variant not listed above.
Quality Assurance & Sourcing
- All units sourced from authorized Siemens distribution channels or verified surplus with full inspection
- Each unit undergoes coil resistance check, contact continuity test, and visual inspection before shipment
- Genuine units include Siemens holographic label and CE/UL markings
- Counterfeit risk mitigation: Konmask provides batch traceability documentation on request
- Warranty: 12 months from date of shipment against manufacturing defects
How to Order
- Part Number: 3RT2026-1AG20
- MOQ: 1 piece
- Lead Time: In-stock items ship within 1–3 business days; special orders 7–15 business days
- Payment: T/T, PayPal, credit card, and trade assurance accepted
- Shipping: DHL / FedEx / UPS express worldwide; sea freight available for bulk orders
- Custom Kitting: Available for panel builders requiring pre-assembled contactor + overload relay combinations
- 📧 support@konmask.com | 📞 +0086 19859288691
Replacement & Compatibility FAQ
Q: Can I replace 3RT2026-1AG20 with 3RT1026-1AG20?
A: Yes. The 3RT1 series is the predecessor to 3RT2. Electrical ratings are identical; the 3RT2 series offers improved energy efficiency and a slightly different housing profile. Mechanical dimensions are compatible for most panel layouts.
Q: Is the Schneider LC1D25F7 a direct replacement?
A: Functionally equivalent in current rating and coil voltage. Terminal labeling differs (A1/A2 vs. A1/A2 — same), but the physical footprint and DIN rail pitch may vary by 2–3 mm. Verify before substitution in tight panel layouts.
Q: What overload relay pairs with this contactor?
A: The Siemens 3RU2126 series clips directly onto the 3RT2026 without an adapter. Set the overload to match your motor’s full-load current.
Q: Can this contactor be controlled by a PLC transistor output?
A: Not directly recommended. The coil inrush current may exceed transistor output ratings. Use a relay output module or an interposing relay (e.g., Siemens 3RQ1000 series).
Q: Do you supply counterfeit-free guarantee?
A: Yes. Konmask provides batch documentation and source traceability. Contact us for a certificate of conformity if required for your quality system.
© 2026 Konmask.com. All rights reserved.
Original Source: https://Konmask.com
Contact: support@konmask.com | +0086 19859288691
