• RS Stock No. 361-1631
  • Brand Broyce Control
  • Mfr. Part No. 45OFR 230VAC
Broyce Control
Broyce Control Frequency Monitoring Relay with DPDT Contacts, 1 Phase, 230 V ac
Product Details

45OFR Frequency Relay

Detects Over frequency
OFR relay energises if frequency rises above trip level – red LED off, contacts 11, 12 /21 & 22
Adjustable trip level: 40 → 60Hz
Adjustable hysteresis
Monitors own supply
1 x DPDT relay output: 8A
LED indication for supply and relay status
DIN rail housing
Write on identification tab
Dimensions: H78 x W45 x D99mm

Broyce Monitor Relays

Relay controllers manufactured using flame retardant material to UL94 VO
Electrical life: ≥150 000 operations
Suitable for use within ambient temperature environments from -20 to +60°C (except stock no. 361-1710 and 361-1681 which are suitable from -20 to +50°C)


Output relay contact rating specified at 250Vac

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Monitoring ApplicationFrequency
Supply Voltage230 V ac
Contact ConfigurationDPDT
Electrical Phase1
Time Delay200 ms
Frequency Sensing Range40 → 60 Hz, 50 → 70 Hz
Minimum Frequency Sensed40Hz
Operating Temperature Range-20 → +60 °C
Minimum Operating Temperature-20°C
Dimensions99 x 45 x 78 mm
Maximum Operating Temperature+60°C
Frequency SensitivityOverfrequency
Maximum Frequency Sensed60 Hz, 70 Hz
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Technical Reference
  • RS Components

    Statement of conformity

    The product detailed below complies with the specifications published by RS Components. Where applicable it provides assurance that electrostatic discharge sensitive devices have been handled and packed under conditions that meet the administrative and technical requirements of the ANSI/ESD S20.20:2014 and BS EN 61340-5-1:2007 Electrostatic Control Standards.
    RS Stock No. 361-1631
    Description Broyce Control Frequency Monitoring Relay with DPDT Contacts, 1 Phase, 230 V ac
    Manufacturer/Brand: Broyce Control
    Mfr. Part No. 45OFR 230VAC
    The foregoing information relates to product sold on, or after, the date shown below.
    Date Dec 18, 2017
    RS Components Ltd, Birchington Road, Corby, Northamptonshire, NN17 9RS, UK
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