700-HB33A1 | Allen Bradley | General Purpose 3-Pole Square Base Relay

Product Overview

The Allen Bradley 700-HB33A1 functions as a high-capacity switching solution for industrial control panels requiring multi-circuit management. This 3-pole (3PDT) relay handles loads up to 15 Amps and operates via a standard 120V AC control signal. We supply this unit as 100% Brand New original factory stock, ensuring peak electrical performance and mechanical longevity in critical automation circuits.

Technical Specifications

The 700-HB33A1 utilizes a square-base, blade-style architecture to maximize surface contact and electrical conductivity.

Engineering Advantages

• High-Density Circuit Control: The 3PDT (3-pole, double-throw) configuration allows a single control signal to switch three independent loads simultaneously. This reduces the number of relays required in a panel, saving DIN rail space and simplifying the overall wiring architecture.

• Dual Status Diagnostics: The 700-HB33A1 incorporates both an LED indicator and a mechanical flag. These features allow technicians to verify coil energization and contact position at a glance, significantly accelerating troubleshooting during commissioning or system downtime.

• Superior Current Handling: Rated at 15 Amps, this relay manages significantly higher power loads than standard 5A or 10A control relays. The robust blade-style terminals provide a larger surface area for heat dissipation, preventing terminal overheating during continuous high-load operation.

• Secure Mechanical Seating: The square-base design provides superior mechanical stability compared to circular pin-style relays. When installed in compatible Allen Bradley 700-HN sockets, the blade terminals exert constant spring pressure, which prevents signal flickering in high-vibration environments such as stamping or heavy assembly lines.

FAQs

• What is the primary difference between the 700-HB and 700-HA series?

  The 700-HB series (like the 700-HB33A1) utilizes a square base with blade-style terminals, whereas the 700-HA series uses a circular tube base with pin-style terminals. The 700-HB generally supports higher amperage (15A) compared to the standard 10A ratings often found in the 700-HA series.

• Does this relay require a specific socket for installation?

  Yes. You must mount the 700-HB33A1 into a compatible square-base socket, such as the Allen Bradley 700-HN153 or 700-HN154 series. Ensure the socket amperage rating matches or exceeds the relay's 15A capacity.

• How does the 120V AC coil handle frequency variations?

  The dual-rated 50/60 Hz coil allows the relay to operate globally. It maintains consistent pull-in and drop-out times regardless of whether the local power grid operates at 50 Hz or 60 Hz, ensuring predictable timing in your control logic.

• Can I replace a 2-pole relay with this 3-pole model?

  Yes, provided the socket supports a 3-pole configuration. Using a 3-pole relay in place of a 2-pole model provides an extra set of unused contacts, which engineers often utilize for future circuit expansion or local alarm feedback.