Relay Output Module Allen-Bradley 1769-OW8I

Availability: 99 left in stock

Product DescriptionThe Allen-Bradley 1769-OW8I is an 8-point relay output module designed for the 1769 Compact I/O platform, compatible with CompactLogix and MicroLogix...

SKU: 1769-OW8I

Manufacturer: Allen Bradley
Product No.: 1769-OW8I
Product Type: Relay Output Module
Product Origin: USA
Payment:T/T, Western Union
Weight: 500g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Product Description
The Allen-Bradley 1769-OW8I is an 8-point relay output module designed for the 1769 Compact I/O platform, compatible with CompactLogix and MicroLogix 1500 controllers. It provides individually isolated, normally open (NO) relay contacts capable of switching both AC and DC loads across a wide voltage range, making it ideal for mixed-voltage control applications.

Outputs are organized into two electrically isolated groups of four points each. Each relay supports switching up to 265 VAC or 125 VDC, with a typical mechanical life exceeding 10 million operations and electrical life rated for 100,000 cycles at full load (resistive).

Key technical specifications:

Output Type: Electromechanical relays, normally open (NO)
Number of Outputs: 8 (4 per isolated group)
Voltage Range:

AC: 5 to 265 VAC
DC: 5 to 125 VDC

Switching Capacity:

2 A per point at 265 VAC (resistive)
2 A per point at 125 VDC (resistive)

On/Off Response Time: ≤10 ms
Isolation:

Output-to-backplane: Reinforced insulation, 265 VAC working voltage (IEC Class II), tested at 1836 VAC / 2596 VDC for 1 second
Group-to-group: Basic insulation, 265 VAC working voltage, same dielectric test

Maximum Heat Dissipation: 2.83 W
Mounting: DIN rail (standard 1769) or direct panel mount
Physical Dimensions (H × W × D): 118 mm × 35 mm × 87 mm (approx.)
Slot Width: Occupies 1 module slot in the 1769 chassis
Compatible Power Supplies: 1769-PA2, 1769-PB2, 1769-PA4, 1769-PB4
Maximum Distance from Power Supply: Up to 8 modules away (within same I/O bank)

This module is well-suited for applications requiring galvanic isolation between field devices and the controller—such as motor starters, solenoid valves, indicator lamps, or interfacing with legacy equipment operating at different voltage levels.

FAQ
Q: Can the 1769-OW8I switch inductive loads like contactor coils?
A: Yes, but snubber circuits or flyback diodes are recommended to suppress voltage transients and extend relay life.

Q: Is this module suitable for safety-critical circuits?
A: No. The 1769-OW8I is not certified for functional safety applications (e.g., SIL or PL-rated systems). Use dedicated safety relays or safety I/O for such purposes.

Q: What’s the difference between the 1769-OW8 and 1769-OW8I?
A: The “I” suffix denotes individually isolated outputs grouped in two banks of four. The standard OW8 has common returns per group without reinforced isolation between points.

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