*mydirectindustry

Catalogs
Marsh Bellofram
Marsh Bellofram Diversified Electronics Division VBA Series Single Phase Voltage Band Monitor

Marsh Bellofram Diversified Electronics Division VBA Series Single Phase Voltage Band Monitor

Product catalog summary

Overview: The VBA Series is designed to protect single-phase equipment by monitoring voltage levels and ensuring operation within specified limits. It automatically resets when normal conditions resume.

Specifications:

Power Requirements: Models up to 110 VDC require 3 Watts max; models up to 300 VAC require 5 VA max.
Output Rating: Style A features DPDT with 5A at 240 VAC resistive and 211 VA inductive. Style N features SPDT with 10A at 240 VAC resistive and 180 VA inductive.
Response Times: Operate time is approximately 50 mSEC (500 mSEC for 12 VDC units), and release time is approximately 0.5 SEC.
Temperature Rating: Operating temperature ranges from 32° to 131°F (0° to 55°C), and storage temperature ranges from -49° to 185°F (-45° to 85°C).
Weight: 5 oz.

Model Details: The document lists various models with their nominal voltage, pick-up under voltage, pick-up over voltage, and hysteresis voltage. For example, the VBA-24-A*A model operates at 24 VAC with a pick-up under voltage of 19-24 and a pick-up over voltage of 24-29, with a hysteresis of 2.

Operation: The internal relay energizes when normal voltage is applied and de-energizes when voltage falls outside preset limits for longer than the release delay. Hysteresis provides a differential between pick-up and drop-out points.

Catalog excerpts

Marsh Bellofram Diversified Electronics Division VBA Series Single Phase Voltage Band Monitor-1

800.727.5646 atcdiversified.com Diversified Electronics VBA Series Phase Voltage Monitors // VBA Series 229 Singl e P ha s e Vo l t a g e B a n d M o n i t or The VBA Series offers protection to single phase equipment that is required to operate between two voltage limits. Supply voltage is monitored for a preselected UNDER and OVER voltage limit. With normal operating voltage applied, the internal relay will energize (PICK-UP). When the voltage falls outside the preset Over/Under trip points for longer than the release delay, the relay will de-energize (DROP-OUT). When line conditions return to normal, the VBA Series automatically resets and the internal relay energizes. The HYSTERESIS in each unit on the Under and Over limits provides a differential between the PICK-UP and DROP-OUT trip points. Style A Only MODEL NUMBER NOMINAL VOLTAGE PICK-UP UNDER VOLTAGE PICK-UP OVER VOLTAGE HYSTERESIS VOLTAGE VBA-24-A*A 24 VAC 19-24 24-29 2 VBA-120-A*A 120 VAC 90-120 120-150 5 VBA-208-A*A 208 VAC 185-208 208-240 8 VBA-240-A*A 240 VAC 200-240 240-270 10 VBA-12-D*A 12 VDC 10-12 12-15 1 VBA-24-D*A 24 VDC 19-24 24-29 1 VBA-28-D*A 28 VDC 22-28 28-34 1 VBA-48-D*A 48 VDC 38-48 48-58 2 VBA-110-D*A 110 VDC 85-110 110-135 5 VBA-24-AFN 24 VAC 21.6 26.4 0 VBA-120-AFN 120 VAC 108 132 0 VBA-208-AFN 208 VAC 187 229 0 VBA-220-AFN 208/240 VAC 198 242 0 VBA-230-AFN 230 VAC 207 253 0 VBA-240-AFN 240 VAC 216 264 0 *ADJUSTMENTS F = Fixed, K = Knob, L = Locknut Style N Style A RB-08 or PF083A \\\OPERATION \\\SPECIFICATIONS POWER REQUIRED Models Up To 110 VDC: 3 Watts, Max. Models Up To 300 VAC: 5 VA, Max. OUTPUT RATING Style A DPDT, 5A @ 240 VAC, Resistive; 211 VA @ 240, Inductive. Style N SPDT, 10A @ 240 VAC, Resistive; 180 VA, Inductive. RESPONSE TIMES Operate 50 mSEC (approx.) (500 mSEC on 12 VDC units) Release 0.5 SEC (approx.) TEMPERATURE RATING Operate 32° to +131°F (0° to +55°C) Storage -49° to 185°F (-45° to +85°C) WEIGHT 5 oz. \\\WIRING

Open the catalog to page 1

All Marsh Bellofram catalogs and technical brochures

Archived catalogs

*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.

Brand list