Third Rail Voltage Detector (4E2-1)
$611.92
The Safe Third Rail Voltage Detector with True Redundancy
The Next-Generation TESCO Third Rail Voltage Detector is a modernized successor to the long-standing 4E2-1 model, engineered for today’s transit, rail, and electrified transportation environments. Incorporating extensive voice-of-customers from multiple U.S. passenger rail systems, this upgraded design delivers enhanced visibility, improved ingress protection, true redundant safety circuitry, and an extended four-foot span for increased operator clearance.
This next-generation voltage detector builds on TESCO’s legacy of rugged, field-proven safety tools designed for real-world operating conditions.
Description
The unit is designed for AC and DC third-rail systems across the globe. The 4E2-1 is manufactured with UL approved components. Key improvements include a brighter LED visual indication system, an integrated audible alert for crew-wide awareness, optional magnetic ground probe for hands-free stabilization, full protective housing over electronic components, and a self-test capability for positive confirmation of functionality in territories without active third-rail power.
Key Benefits:
- Enhanced Safety and Crew Awareness: Dual-mode indication—LEDs plus audible alarm—provides immediate and unmistakable voltage-present feedback for both operator and surrounding crew.
- Extended Operator Clearance: A four-foot reach increases the distance between personnel and energized third rail surfaces.
- Ingress-Protected Design: All internal circuitry is enclosed to eliminate exposed lamp windows and reduce moisture or debris concerns.
- Transit-Driven Architecture: Direct VOC from AMTRAK and other agencies drove upgrades including LEDs, alarm, and matching probe tips.
- Redundant Circuitry and Overvoltage Protection: Engineered with multiple safety paths to minimize failure points and support operational reliability.
Key Features:
- High-Visibility LED Indicators: LED lamps replace previous neon bulbs and provide significantly improved visibility in bright sunlight and nighttime conditions.
- Integrated Audible Alarm: An additional layer of voltage-present confirmation for nearby crew members.
- Redundant Safety Circuitry: Minimizes single-point failures and ensures reliable indication.
- Fully Enclosed Electronics: Protects internal components from weather exposure and ingress concerns.
- 4-Foot Testing Span: Enables increased distance between operator and energized rail.
- Rugged TESCO Construction: Impact-resistant housing, stainless steel tips, and soldered internal connections ensure long-term durability.
Applications and use cases:
- Detecting energized third-rail systems
- Transit and rail system maintenance
- Passenger rail and commuter rail electrification
- Pre-work voltage verification
- De-energization confirmation prior to inspection
- Self-test verification in non-powered territories
- Crew safety confirmation scenarios
Included Accessories:
- Carrying case
- Standard stainless steel ground probe
- Optional magnetized ground probe
- Rubberized hand guard
Specifications
| Category | Details |
|---|---|
| Span Length | 4 ft (48”) |
| Housing | Phenolic or reinforced composite |
| Grip | Rubberized safety guard |
| Ingress Protection | Fully enclosed electronics |
| Weight | 12 ounces |
| Ground Options | Stainless steel tip |
| Voltage Range | 1,500 V DC |
| System Types | AC and DC third-rail systems |
| Circuitry | Redundant pathways |
| Overvoltage Protection | Integrated |
| Indicators | High-brightness enclosed LEDs and audible alarm |
| Self-Test | Separate accessory available for purchase |
| Certification | UL listed components |
| Safety Design | Redundant circuitry for additional safety and reliability |
| Warranty | 1 year |
Product Documents
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Disclaimer:
TESCO Metering reserves the right to modify product designs, specifications, features, and documentation at any time as part of our continuous improvement process. All information is provided “as is” and may change without prior notice. While TESCO® strives for accuracy, completeness, and technical reliability, customers should verify the latest product details before making purchasing or engineering decisions. For confirmation of current specifications or application suitability, please contact TESCO® directly.