A control arrangement (10) is operable to control an electrical relay (12) to supply current. The arrangement comprises current supply means (16) and control means (18) operable to provide a relay make signal and a relay break signal at (20) to control the state of the relay (12) to respectively make and break a connection to the current supply means (16). Further control means (28) are operable to enable or disable the current supply means (16). A first delay means (24) operates to delay enabling the current supply means (16) until after a relay make signal has been provided, to allow the relay (12) to make the connection before current supply commences. Excess current is also sensed, at (32, 34) and controlled by a form of pulse-width modulation.