Motor Protection Solution – SIEMENS 3VU1300-1NJ00 | 3VU Series Motor Starter Protector
The SIEMENS 3VU1300-1NJ00 is a compact, industrial-grade Motor Starter Protector (MSP) from the SIEMENS 3VU Series, engineered to provide reliable overload and short-circuit protection for three-phase motors in demanding industrial environments. With a robust design and precise trip characteristics, this device is the preferred choice of control engineers specifying protection for motor branch circuits up to IEC and UL standards.
Where This Product Is Used
- Manufacturing & Assembly Lines — Protects conveyor motors, pump drives, and compressor starters against overload faults that cause unplanned downtime.
- Water & Wastewater Treatment Plants — Safeguards submersible pump motors and blower drives operating in continuous-duty cycles.
- HVAC & Building Automation — Used in motor control centers (MCCs) to protect fan and chiller motors with adjustable trip settings.
- Oil & Gas Facilities — Installed in hazardous-area control panels for motor branch circuit protection where reliability is non-negotiable.
- Food & Beverage Processing — Deployed in washdown-rated panels protecting mixer, conveyor, and packaging machine motors.
- Automotive & Heavy Industry — Integrated into robotic cell control cabinets for servo motor and spindle drive protection.
Technical Specifications
- Part Number / SKU: 3VU1300-1NJ00
- Series: SIEMENS 3VU
- Type: Motor Starter Protector (Circuit Breaker)
- Manufacturer: SIEMENS AG
- Rated Current Range: Please refer to SIEMENS datasheet for exact trip class and current setting range
- Poles: 3-pole
- Protection Function: Overload + Short-circuit (magnetic + thermal)
- Mounting: DIN rail (35 mm) / panel mount
- Standards: IEC 60947-4-1, UL 508
- Weight: 2,300 g (approx.)
- Country of Origin: Germany
Why Engineers Specify This Model
- Integrated MSP Design — Combines overload relay and circuit breaker in a single compact device, eliminating the need for a separate contactor overload relay in many applications.
- Adjustable Trip Current — Dial-adjustable current setting allows precise motor protection without replacing the device when motor ratings change.
- High Short-Circuit Breaking Capacity — Provides reliable fault interruption at rated voltage, protecting downstream equipment and personnel.
- Direct-On-Line (DOL) Starter Compatibility — Designed for seamless integration with SIEMENS 3RT contactors and 3RV/3VU series accessories.
- Compact Footprint — Space-efficient design reduces panel real estate requirements in dense MCC configurations.
- Proven SIEMENS Reliability — Backed by SIEMENS global quality standards and long-term spare parts availability.
Complete System Bill of Materials
For a complete motor starter circuit using the 3VU1300-1NJ00, engineers typically specify:
- SIEMENS 3VU1300-1NJ00 — Motor Starter Protector (this unit)
- SIEMENS 3RT20 Series — IEC Contactor (size matched to motor kW rating)
- SIEMENS 3SB Series — Pushbutton / Selector Switch (Start/Stop/E-Stop)
- SIEMENS 3RV / 3VU Auxiliary Contact Block — For remote signaling and PLC feedback
- SIEMENS LOGO! or S7-1200 PLC — For automated motor sequencing and fault monitoring
- 24 VDC Control Power Supply — SIEMENS SITOP or equivalent
Compliance & Industry Standards
- IEC 60947-4-1: Low-voltage switchgear — Electromechanical contactors and motor starters
- UL 508: Industrial Control Equipment
- CE Marked — Compliant with EU Low Voltage Directive (LVD) 2014/35/EU
- RoHS Compliant — Restriction of Hazardous Substances
- SIEMENS Factory Quality Certification
Quality Assurance & Sourcing
At Konmask.com, every SIEMENS component is sourced through verified industrial supply channels. The 3VU1300-1NJ00 is inspected upon receipt for:
- Authentic SIEMENS labeling, hologram, and date codes
- Physical integrity — no repackaging, pin damage, or counterfeit indicators
- Traceability documentation available upon request for critical applications
- Storage in ESD-safe, climate-controlled warehouse conditions
How to Source This Part
- In Stock: Order directly via this product page for fast dispatch.
- Bulk / Project Quantity: Contact us at support@konmask.com for volume pricing and lead time confirmation.
- Urgent Requirement: Call or WhatsApp +0086 19859288691 for same-day quotation.
- OEM / System Integrator Accounts: Ask about our trade account program for recurring procurement.
Application-Specific FAQ
Q: Can the 3VU1300-1NJ00 be used as a standalone circuit breaker without a contactor?
A: Yes. As a Motor Starter Protector, it provides both overload and short-circuit protection and can protect a motor branch circuit independently, though a contactor is recommended for frequent switching duty.
Q: Is this device compatible with SIEMENS 3RT contactors?
A: Yes. The 3VU Series is designed for direct mechanical and electrical coupling with SIEMENS 3RT contactor series using standard accessories.
Q: What is the difference between 3VU and 3RV series?
A: Both are Motor Starter Protectors. The 3RV series is the current standard range; the 3VU is an earlier generation with equivalent protection functions. Consult SIEMENS cross-reference documentation for direct substitution guidance.
Q: Can I get a certificate of conformity or test report?
A: Yes. Traceability and conformity documentation can be provided upon request for project or audit requirements. Contact support@konmask.com.
Q: What is the lead time if out of stock?
A: Typical lead time for SIEMENS 3VU series components is 2–6 weeks depending on regional availability. Contact us for real-time stock status.
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