201-100-SP

✅ Product Overview: Littelfuse 201-100-SP

The 201-100-SP is a voltage sensing relay manufactured by Littelfuse Inc., part of the reliable 201-XXX-SP series. It is designed to monitor AC line voltages and activate a relay when the voltage drops below a pre-defined trip point. With its energized-low trip status and SPDT relay output, this component is ideal for power monitoring, motor protection, and industrial control applications.

This compact, socket-mountable relay supports 95 to 120VAC supply input and offers a fixed delay of 4 seconds to eliminate nuisance trips. If you're looking for a dependable solution for voltage sensing, 201-100-SP stands out in performance and durability.

📄 Datasheet Download

Access the official 201-100-SP datasheet from Littelfuse to view detailed electrical characteristics, dimensions, and connection diagrams.

• 📥 Download 201-100-SP Datasheet (PDF)

⭐ Key Features

• Voltage sensing AC relay (95 ~ 120VAC range)
• Energized-low trip status for safe operations
• SPDT (1 Form C) output with 10A @ 240VAC rating
• Fixed 4-second delay to prevent false triggering
• Socketable mounting design for easy installation
• Operates reliably from -40°C to +70°C

📊 Technical Specifications

🔌 Application Scenarios

This AC voltage sensing relay is commonly used in:

• Industrial equipment voltage monitoring
• HVAC and heating systems
• Motor control circuits
• Power failure detection
• Generator automation systems

🛒 Buy 201-100-SP or Find Alternatives

Looking for 201-100-SP or equivalent parts? Contact Onzuu, your trusted electronic component distributor. We offer sourcing, BOM services, and global delivery.

📦 Request a Quote

🏢 Why Choose Onzuu as Your Distributor?

Onzuu is a trusted electronic component distributor offering a wide range of industrial relays, including the 201-100-SP model. As a professional B2B supplier, we ensure:

• Competitive pricing for bulk orders
• Authentic Littelfuse components with traceability
• Fast global shipping and technical support
• Expert sourcing services for obsolete parts

❓ Frequently Asked Questions (FAQ)

Q1: What is the trip range of 201-100-SP?
A1: It trips within 95 ~ 120VAC input range.

Q2: Is the delay adjustable?
A2: No, it features a fixed delay time of 4 seconds.

Q3: Can I use it for motor under-voltage protection?
A3: Yes, it's ideal for such applications thanks to its SPDT relay and low trip status.

Q4: What's the maximum contact rating?
A4: 10 Amps @ 240VAC.

Q5: How do I mount this relay?
A5: It is socket-mountable for easy replacement and installation.

🔚 Conclusion

The 201-100-SP voltage sensing relay is a high-performance, socketable component engineered for industrial-grade applications. Whether you're dealing with motor protection, power monitoring, or system automation, this Littelfuse part delivers consistent and reliable results. Pair it with Onzuu for trusted B2B distribution and expert support.