Allen Bradley 817-E2 Thermistor Overload Relay – 6 PTC Inputs, 24–240V AC/DC, Auto/Manual/Remote Reset, Compact 22.5mm Housing

The Allen Bradley 817-E2 is a thermistor overload relay designed for the protection of motors and equipment using up to 6 PTC thermistor sensors. Operating with a wide 24–240V AC/DC supply voltage, this relay provides accurate thermal monitoring and trip protection against overheating conditions, ensuring reliable operation and extended motor life in industrial environments.

Equipped with auto, manual, and remote reset modes, the 817-E2 offers flexible control integration within automation systems. Featuring 2 normally open (N.O.) and 1 normally closed (N.C.) contact outputs, it delivers both alarm and shutdown functionality when temperature thresholds are exceeded. Its compact 22.5mm-wide enclosure and screw-type connections make it ideal for quick DIN rail installation within space-limited control panels.

Technical Specifications

Model: 817-E2 Allen Bradley
Series: 817-E Thermistor Monitoring Relays
Product Type: Thermistor Overload Relay
Sensor Type: 6 x PTC thermistors
Supply Voltage: 24–240V AC/DC
Voltage Type: AC/DC
Reset Function: Automatic / Manual / Remote
Output Contacts: 2 N.O. + 1 N.C.
Connection Type: Screw terminals
Mounting Type: DIN Rail (35mm top hat)
Dimensions (W x H x D): 22.5 x 82 x 99.5 mm

Electrical & Performance Details

• Supply Voltage Range: 24 to 240V AC/DC
• Thermistor Input: Up to 6 PTC sensors
• Output Configuration: 2 N.O. and 1 N.C. contacts
• Reset Function: Selectable Auto, Manual, or Remote
• Protection Function: Monitors temperature via PTC input and trips on overheat
• Response Time: Fast-acting thermal trip on overtemperature
• Connection Type: Screw terminal connections for secure wiring
• Voltage Type: Universal AC/DC operation

Mechanical Specifications

• Width: 22.5 mm
• Height: 82 mm
• Depth: 99.5 mm
• Mounting: DIN Rail (35mm top hat)
• Housing Type: Compact modular relay body
• Connection Type: Screw terminals
• Detachable Clamps: No

Environmental & Application Suitability

• Typical Applications: Motor protection, pump systems, conveyor drives, and industrial equipment with PTC thermistors
• Monitoring Capability: Monitors resistance changes in up to 6 thermistors for overtemperature conditions
• Use Case: Provides early warning and shutdown to prevent thermal damage
• Installation Environment: Industrial control cabinets and motor starter panels

Compliance & Certifications

• UL / cUL Listed: Yes
• CE Marked: Yes
• EN 60947 Compliant: Yes
• RoHS Compliant: Yes
• IEC Protection Class: Industrial-grade

Key Features & Benefits

✅ Supports 6 PTC sensors for multi-point thermal monitoring.

✅ Wide 24–240V AC/DC supply range for global compatibility.

✅ Auto, manual, or remote reset for flexible system control.

✅ 2 N.O. + 1 N.C. contact configuration for alarm and trip signalling.

✅ Compact 22.5mm design ideal for space-constrained control panels.

✅ Reliable thermal protection for motors and critical equipment.

✅ Screw terminal connections ensure fast and secure installation.

📦 Order the Allen Bradley 817-E2 from Drive Outlet Megastore

At Drive Outlet Megastore we offer unbeatable Allen Bradley 817-E2 prices, with fast UK & EU delivery and expert support for thermistor monitoring relays and industrial motor protection systems.

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Safeguard your motors with the Allen Bradley 817-E2 — precision-engineered thermistor overload protection for reliable temperature monitoring, available now from Drive Outlet Megastore.