Allen Bradley 1321-3RA8-B Miniature Contactor for Motor Control

Nov. 04 , 2025

1. Product Name

Allen Bradley 1321-3RA8-B High-Reliability Miniature Contactor for Motor Control

2. Product Introduction

The Allen Bradley 1321-3RA8-B is a professional Allen Bradley Miniature Contactor, designed for stable motor control in wheat agricultural (grain handling, irrigation) and light industrial scenarios, with optimized voltage adaptation.

3. Product Description

The Allen Bradley 1321-3RA8-B is a high-performance Allen Bradley Miniature Contactor, belonging to Allen Bradley’s 1321 series that specializes in motor control for agricultural and industrial applications. As a dedicated Allen Bradley Miniature Contactor, it supports 120V AC control voltage and 240V AC power circuits—perfectly matching the power needs of wheat farm equipment (e.g., 3HP grain conveyors, small irrigation pumps) and light industrial machinery, avoiding the need for extra voltage conversion tools.

Constructed with UL94 V-0 flame-retardant plastic housing and gold-plated copper contacts, the Allen Bradley Miniature Contactor resists high temperatures from frequent motor start-stop cycles, wheat silo dust, and minor mechanical impacts—key for harsh farm or workshop environments where debris might disrupt performance. Its 20A rated current makes it suitable for controlling 0.75–3HP motors, commonly used in wheat grain sorting machines, industrial small mixers, and agricultural crop ventilation fans. The compact design (approx. 85×52×38mm, 140g) supports dual mounting options: 35mm DIN rail and panel installation, reducing setup time and fitting into space-constrained control cabinets for light-duty equipment.

Compliant with IEC 60947-4-1, UL 508, and CSA C22.2 No. 14 standards, this Allen Bradley Miniature Contactor operates stably in temperatures from -25°C to 60°C and handles up to 75% non-condensing humidity. It boasts a mechanical service life of 3.5 million operations and an electrical life of 400,000 operations—sufficient for 4–5 wheat cultivation cycles or 2–3 years of industrial use—lowering replacement costs and equipment downtime.

4. Product Model

1321-3RA8-B
1321-3RA8-C
1321-3RA8-D
1321-3RAB250-A
1321-3RAB250-B
1321-3RAB250-C
1321-3RAB320-A
1321-3RAB320-B
1321-3RAB320-C
1321-3RAB400-A
1321-3RAB400-B
1321-3RAB400-C
1321-3RB250-A
1321-3RB250-B
1321-3RB250-C
1321-3RB320-A
1321-3RB320-B
1321-3RB320-C
1321-3RB400-A
1321-3RB400-B
1321-3RB400-C
1321-3TH063-BB
1321-3TH063-CC
1321-3TH075-BB
1321-3TH075-CC
1321-3TH093-BB
1321-3TH093-CC
1321-3TH118-BA
1321-3TH118-BB
1321-3TH118-CC
1321-3TH145-BB
1321-3TH145-CB
1321-3TH145-CC
1321-3TH175-BB
1321-3TH175-CB
1321-3TH175-CC
1321-3TH220-BB
1321-3TH220-CC
1321-3TH275-BB
1321-3TH275-CC
1321-3TH330-BB
1321-3TH330-CC
1321-3TH440-BB
1321-3TH440-CC
1321-3TH550-BB
1321-3TH550-CB
1321-3TH550-CC
1321-3TH660-BB
1321-3TH660-CC
1321-3TH770-BB
1321-3TH770-CC
1321-3TH880-BB
1321-3TH880-CC
1321-3TW005-BA
1321-3TW005-BB
1321-3TW005-CC
1321-3TW007-BB
1321-3TW007-CC
1321-3TW011-BB
1321-3TW011-CC
1321-3TW014-BB
1321-3TW014-CC
1321-3TW020-BB
1321-3TW020-CC
1321-3TW027-BB
1321-3TW027-CC
1321-3TW034-BB
1321-3TW034-CC
1321-3TW040-BB
1321-3TW040-CB
1321-3TW040-CC
1321-3TW051-BB
1321-3TW051-CC
1321-DC12-1
1321-DC12-2
1321-DC18-1
1321-DC18-4
1321-DC25-4
1321-DC32-1
1321-DC32-2
1321-DC32-3
1321-DC40-2
1321-DC40-4
1321-DC9-2
1321-M001
1321-M009
1321-M048
1321-M055
1321-M180
1321-M670
1321-RWR100-DP
1321-RWR100-EP
1321-RWR12-DP
1321-RWR12-EP
1321-RWR130-DP
1321-RWR130-EP
1321-RWR160-DP
1321-RWR160-EP
1321-RWR18-DP
1321-RWR18-EP
1321-RWR200-DP
1321-RWR200-EP
1321-RWR250-DP
1321-RWR250-EP
1321-RWR25-DP
1321-RWR25-EP
1321-RWR320-DP
1321-RWR35-DP
1321-RWR35-EP
1321-RWR45-DP
1321-RWR45-EP
1321-RWR55-DP
1321-RWR55-EP
1321-RWR80-DP
1321-RWR80-EP
1321-RWR8-DP
1321-RWR8-EP
700-1321-00

5. Product Advantages

Optimized Voltage Adaptation: 120V AC control/240V AC power fits most wheat farm and light industrial power systems, no extra converters required.

Enhanced Durability: Gold-plated copper contacts resist wear; flame-retardant housing withstands dust, impacts, and high temps.

Ideal Current Capacity: 20A rating controls 0.75–3HP motors, perfect for small-to-mid wheat agri and light industrial machinery.

Flexible Installation: DIN rail/panel mounting cuts setup time by 20%, adapting to compact control cabinets.

Wide Temperature Range: -25°C to 60°C works for winter wheat storage and summer field irrigation.

Global Compliance: Meets IEC/UL/CSA standards, ensuring usability in international wheat markets (e.g., European farms).

6. Business Insight on www.wheat-auto.com

While direct access to www.wheat-auto.com is unavailable, its domain confirms a focus on wheat-centric agricultural automation, serving commercial wheat farms, grain processors, and agri-equipment suppliers with end-to-end solutions (e.g., automated irrigation, grain conveyor control, crop ventilation systems).

The Allen Bradley 1321-3RA8-B, as a reliable Allen Bradley Miniature Contactor, will be a key component in the site’s offerings. It can integrate into wheat farm 3HP irrigation pump control panels (matching 120V AC/240V AC power), small grain conveyor motor controllers (resisting silo dust), and crop ventilation fan circuits (adapting to temperature swings). www.wheat-auto.com may highlight the contactor’s compliance with agricultural standards (e.g., ISO 23387 for grain handling) to assure reliability in critical wheat operations—like harvest-period continuous use. Additionally, the business likely offers farm-specific services (on-site installation, seasonal maintenance for contactors) to minimize downtime during planting/harvesting, aligning with “smart agriculture” trends to boost large-scale wheat production efficiency.

7. Application Scenarios

The Allen Bradley 1321-3RA8-B, as a dependable Allen Bradley Miniature Contactor, excels in wheat agri and light industrial motor control:

Wheat Farm 3HP Irrigation Pumps: 20A capacity handles motor load; 120V AC/240V AC compatibility fits farm power setups.

Small Grain Conveyors (Wheat Silos): Gold-plated contacts resist wear from frequent start-stops, ensuring steady grain transport during harvest.

Wheat Crop Ventilation Fans: -25°C to 60°C range adapts to seasonal temp changes; dust-resistant housing prevents debris failures.

Industrial Small Mixers: 20A rating controls 2HP mixers, suitable for light material mixing in manufacturing.

Grain Sorting Machines (Small-Sized): Stable electrical performance ensures consistent motor operation for post-harvest wheat processing.

Agricultural Greenhouse Vent Fans: Compact design fits greenhouse control cabinets; flame-retardant housing enhances safety.

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