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1771-OZL | Allen-Bradley 8-Point Dry-Reed Relay Digital Output Module for PLC-5 Systems
- Regular price
- $592.50
- Sale price
- $592.50
- Regular price
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Product Description P/N: 1771-OZL
Description
The Allen-Bradley 1771-OZL is an 8-point dry-reed relay output module designed for low-power AC and DC switching in PLC-5 control systems. It features normally open Form A contacts arranged in four isolated groups, providing reliable signal control in environments where sealed relay contacts are required. Operating from 0–24V AC/DC, the module is suited for applications involving sensitive or contamination-prone field devices.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Allen-Bradley |
| Category | Industrial Automation |
| Part Number | 1771-OZL |
| Subcategory | Digital Output Modules |
| Module Type | Dry-Reed Relay Digital Output Module |
| Number of Outputs | 8 (4 sets of 2) |
| Output Type | Normally Open (Form A) dry-reed relays |
| AC Operating Voltage | 0–24V AC |
| DC Operating Voltage | 0–24V DC |
| Max Output Current | 100 mA per channel |
| Minimum Load | 10 mA @ 24V |
| Switching Frequency | Up to 10 Hz |
| Operate/Release Time | 1 ms typical |
| Isolation | 1000V open contacts; 1500V coil-to-contacts |
| Backplane Current | 420 mA |
| Power Dissipation | 2.0–2.2 W |
| Thermal Dissipation | 6.9–7.6 BTU/hr |
| Wiring Arm | 1771-WD |
| Mounting | Rack mount (1771 I/O chassis) |
| Environmental Rating | 0–60 °C (32–140 °F), 5–95% RH non-condensing |
| Standards | CE, UL, C-Tick, CSA, Marine |
| Special Note | Contains mercury |
| Applications | Low-power AC/DC relay switching |
| Weight | 1.84 lb |
Information About 1771-OZL
The 1771-OZL belongs to the Allen-Bradley 1771 I/O family, developed for use with PLC-5 systems. It features 8 Form A (N.O.) dry-reed relay outputs grouped into 4 sets, with each group having its own common terminal. These outputs are electrically isolated from the module’s logic circuitry and are indicated on the front panel by dedicated status LEDs. The module supports 0–24V AC or DC operation, with a maximum output current of 100 mA per channel and a minimum load of 10 mA at 24V. Built for precision, it offers a 1 ms operate/release time, 1 ms signal delay, and maximum switching frequency of 10 Hz. It connects through the 1771-WD wiring arm and mounts in a 1771 Series A or B I/O chassis. The 1771-OZL also provides 1000V open contact isolation and 1500V coil-to-contact isolation, ensuring safe and reliable operation. With power dissipation of 2.0–2.2 W and thermal dissipation of 6.9–7.6 BTU/hr, it is designed for use in industrial environments with 0–60 °C operating range and 5–95% non-condensing humidity.
Key Features:
- Eight Dry-Reed Relay Outputs: Provides 8 normally open Form A relay outputs using sealed dry-reed technology, ensuring reliable low-power switching while preventing contamination from dust, gases, and industrial residues.
- Grouped Output Architecture: Arranged in four independent groups of two outputs, allowing separation of circuits, dedicated commons per group, and safer handling of multi-circuit control environments.
- Low-Voltage Switching Capability: Supports 0–24V AC or DC operation for driving small loads such as annunciators, pilot lights, signal relays, and low-current instrumentation circuits.
- Fast Relay Response: Offers a 1 ms typical operate and release time plus up to 10 Hz switching frequency, enabling responsive control for timing, interlocking, and signaling applications.
- High Electrical Isolation: Provides 1000V open-contact isolation and 1500V coil-to-contact isolation, protecting controller logic from electrical noise, ground shifts, and transient events.
- Integrated Status Indicators: Equipped with front-panel LEDs for each output channel, allowing immediate visual confirmation of relay energization and simplifying diagnostics during commissioning and troubleshooting.
- Mercury-Sealed Design: Uses mercury-wetted reed relays (where applicable), delivering bounce-free switching, long contact life, and consistent performance across millions of operations.
- Robust PLC-5 Integration: Installs securely in standard 1771 I/O chassis and interfaces through the 1771-WD wiring arm, enabling tool-free module replacement without disturbing field wiring.
The 1771-OZL delivers the reliability and precision required for safe, isolated, and contamination-resistant relay output control in PLC-5 industrial automation systems.
Description
The Allen-Bradley 1771-OZL is an 8-point dry-reed relay output module designed for low-power AC and DC switching in PLC-5 control systems. It features normally open Form A contacts arranged in four isolated groups, providing reliable signal control in environments where sealed relay contacts are required. Operating from 0–24V AC/DC, the module is suited for applications involving sensitive or contamination-prone field devices.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Allen-Bradley |
| Category | Industrial Automation |
| Part Number | 1771-OZL |
| Subcategory | Digital Output Modules |
| Module Type | Dry-Reed Relay Digital Output Module |
| Number of Outputs | 8 (4 sets of 2) |
| Output Type | Normally Open (Form A) dry-reed relays |
| AC Operating Voltage | 0–24V AC |
| DC Operating Voltage | 0–24V DC |
| Max Output Current | 100 mA per channel |
| Minimum Load | 10 mA @ 24V |
| Switching Frequency | Up to 10 Hz |
| Operate/Release Time | 1 ms typical |
| Isolation | 1000V open contacts; 1500V coil-to-contacts |
| Backplane Current | 420 mA |
| Power Dissipation | 2.0–2.2 W |
| Thermal Dissipation | 6.9–7.6 BTU/hr |
| Wiring Arm | 1771-WD |
| Mounting | Rack mount (1771 I/O chassis) |
| Environmental Rating | 0–60 °C (32–140 °F), 5–95% RH non-condensing |
| Standards | CE, UL, C-Tick, CSA, Marine |
| Special Note | Contains mercury |
| Applications | Low-power AC/DC relay switching |
| Weight | 1.84 lb |
Information About 1771-OZL
The 1771-OZL belongs to the Allen-Bradley 1771 I/O family, developed for use with PLC-5 systems. It features 8 Form A (N.O.) dry-reed relay outputs grouped into 4 sets, with each group having its own common terminal. These outputs are electrically isolated from the module’s logic circuitry and are indicated on the front panel by dedicated status LEDs. The module supports 0–24V AC or DC operation, with a maximum output current of 100 mA per channel and a minimum load of 10 mA at 24V. Built for precision, it offers a 1 ms operate/release time, 1 ms signal delay, and maximum switching frequency of 10 Hz. It connects through the 1771-WD wiring arm and mounts in a 1771 Series A or B I/O chassis. The 1771-OZL also provides 1000V open contact isolation and 1500V coil-to-contact isolation, ensuring safe and reliable operation. With power dissipation of 2.0–2.2 W and thermal dissipation of 6.9–7.6 BTU/hr, it is designed for use in industrial environments with 0–60 °C operating range and 5–95% non-condensing humidity.
Key Features:
- Eight Dry-Reed Relay Outputs: Provides 8 normally open Form A relay outputs using sealed dry-reed technology, ensuring reliable low-power switching while preventing contamination from dust, gases, and industrial residues.
- Grouped Output Architecture: Arranged in four independent groups of two outputs, allowing separation of circuits, dedicated commons per group, and safer handling of multi-circuit control environments.
- Low-Voltage Switching Capability: Supports 0–24V AC or DC operation for driving small loads such as annunciators, pilot lights, signal relays, and low-current instrumentation circuits.
- Fast Relay Response: Offers a 1 ms typical operate and release time plus up to 10 Hz switching frequency, enabling responsive control for timing, interlocking, and signaling applications.
- High Electrical Isolation: Provides 1000V open-contact isolation and 1500V coil-to-contact isolation, protecting controller logic from electrical noise, ground shifts, and transient events.
- Integrated Status Indicators: Equipped with front-panel LEDs for each output channel, allowing immediate visual confirmation of relay energization and simplifying diagnostics during commissioning and troubleshooting.
- Mercury-Sealed Design: Uses mercury-wetted reed relays (where applicable), delivering bounce-free switching, long contact life, and consistent performance across millions of operations.
- Robust PLC-5 Integration: Installs securely in standard 1771 I/O chassis and interfaces through the 1771-WD wiring arm, enabling tool-free module replacement without disturbing field wiring.
The 1771-OZL delivers the reliability and precision required for safe, isolated, and contamination-resistant relay output control in PLC-5 industrial automation systems.
