Thermal Overload Relays - Schneider Electric

Schneider Electric LR7K0306 is a non-differential thermal overload relay designed for unbalanced networks, belonging to the LR7K sub-range. It features a 3-pole configuration and offers protection functions classified under Class 10A. The relay is designed for direct connection to a contactor upstream, with outgoing cables connected via screw-clamp and the control circuit also utilizing a screw-clamp connection type. It provides thermal overload protection settings adjustable between 0.8-1.2A. Additionally, it includes 1 Normally Open (NO) auxiliary contact and 1 Normally Closed (NC) auxiliary contact. The LR7K0306 is rated for a phase-to-phase voltage of up to 690 V AC, with a minimum operating current of 0.8 A and a maximum of 1.2 A.

Schneider Electric LR3D3656 is a non-differential thermal overload relay designed for unbalanced networks, falling within the LR3D sub-range. It features a direct connection type to the contactor for upstream connections, with outgoing cables connected via lugs and a control circuit utilizing screw-clamp connections. This 3-pole relay is engineered for protection functions classified under Class 10A, with a rated current range of 48-65 A. The protection settings for thermal overload are adjustable between 48-65A. It includes 1 Normally Open (NO) auxiliary contact and 1 Normally Closed (NC) auxiliary contact. The rated voltage for phase-to-phase connections is up to 690 V for frequencies ranging from 0 to 400Hz. The minimum current specification is 48 A, and it can handle a maximum current of 65 A.

Schneider Electric LR3D3506 is a non-differential thermal overload relay designed for unbalanced networks, belonging to the LR3D sub-range. It features a direct connection type to the contactor for upstream connections, with outgoing cables connected via lugs and a control circuit connected through screw-clamp terminals. This 3-pole relay is engineered for a rated current of 37-50 A, with protection settings adjustable within the same range. It includes 1 Normally Open (NO) and 1 Normally Closed (NC) auxiliary contacts for enhanced control flexibility. The LR3D3506 is capable of handling a rated voltage (AC) of up to 690 V at frequencies ranging from 0 to 400Hz, with a minimum operating current of 37 A and a maximum of 50 A.

Schneider Electric LR3D3406 is a non-differential thermal overload relay designed for unbalanced networks, falling within the LR3D sub-range. It features a direct connection type to the contactor for upstream connections, with outgoing cables connected via lugs and a control circuit connected through screw-clamp terminals. This 3-pole relay is engineered for protection functions classified under Class 10A, with a rated current range of 30-40 A. The protection settings for thermal overload are adjustable between 30-40A. It includes 1 Normally Open (NO) auxiliary contact and 1 Normally Closed (NC) auxiliary contact. The rated voltage for phase-to-phase connections is up to 690 V for frequencies ranging from 0 to 400Hz. The minimum operating current is set at 30 A, with a maximum threshold of 40 A.

Schneider Electric LR3D32L6 is a non-differential thermal overload relay designed for unbalanced networks, falling within the LR3D sub-range. It features a direct connection to the contactor for upstream connections, with outgoing cables connected via lugs and a control circuit utilizing screw-clamp connections. This 3-pole relay is engineered for a rated current of 23-32 A, with protection settings adjustable within the same range. It includes 1 Normally Open (NO) and 1 Normally Closed (NC) auxiliary contacts for enhanced functionality. The LR3D32L6 is capable of handling a phase-to-phase rated voltage (AC) of up to 690 V at frequencies ranging from 0 to 400Hz, with a minimum operating current of 23 A and a maximum of 32 A.

Schneider Electric LR3D318 is a non-differential thermal overload relay designed for unbalanced networks, classified under the LR3D range. It features a direct connection to the contactor for upstream connections and screw-clamp terminals for outgoing cables and the control circuit. This three-pole device offers protection functions with settings adjustable from 12 to 18A, suitable for Class 10A applications. It includes 1 Normally Open (NO) and 1 Normally Closed (NC) auxiliary contacts. The LR3D318 is rated for a phase-to-phase voltage of up to 690V (0-400Hz) and supports a minimum current of 12A and a maximum current of 18A.

Schneider Electric LR3D10L6 is a non-differential thermal overload relay designed for unbalanced networks, belonging to the LR3D sub-range. It features a 3-pole configuration and offers protection functions with a class 20 rating. The relay is designed for direct connection to a contactor upstream, with outgoing cables connected to lugs and a control circuit connected via screw-clamp terminals. It supports a rated current range of 4-6 A, with protection settings adjustable within the same range. The LR3D10L6 includes 1 Normally Open (NO) and 1 Normally Closed (NC) auxiliary contacts for enhanced control functionality. It is capable of handling a rated voltage (AC) of up to 690 V at frequencies ranging from 0 to 400Hz, with a minimum operating current of 4 A and a maximum of 6 A.

Schneider Electric LT4760M7S, part of the LT47 sub-range, is a 3-pole electronic overcurrent relay designed for use with 2 measurement current transformers in a control circuit featuring screw-clamp connections. It offers protection functions including electronic overcurrent relay, locked rotor mechanical jamming, overload with Imax greater than Isetting, and sensitivity to phase failure. The rated current range is 5-60 A, with control voltage specifications of 200-240 Vdc for DC and 200-240 Vac (50/60Hz) for AC. Protection settings include thermal overload adjustments from 5-60A, a D-time knob ranging from 0.5-30s, and an O-time knob from 0.3-10s. It also features 1 Normally Open (NO) and 1 Normally Closed (NC) auxiliary contacts. The supply voltage is rated at 200-240 V for both AC and DC, with a rated voltage (AC) phase-to-phase of 690 V (50-60Hz). The minimum and maximum currents are set at 5 A and 60 A, respectively.

Schneider Electric LT4706BS, part of the LT47 sub-range, features a connection type of 2 measurement current transformers with screw-clamp terminals and is designed with 3 poles. It includes protection functions such as an electronic overcurrent relay, locked rotor mechanical jamming, overload protection with Imax greater than Isetting, and sensitivity to phase failure. The rated current for this device ranges from 0.5-6 A, and it operates with a control voltage of 24 Vdc. Protection settings include thermal overload adjustments from 0.5-6A, with a D-time knob ranging from 0.5-30s and an O-time knob from 0.3-10s. It also supports a control voltage (AC) of 24 Vac at 50/60Hz, includes 1 Normally Open (NO) auxiliary contact and 1 Normally Closed (NC) auxiliary contact, and requires a supply voltage of 24 V AC/DC. The rated voltage (AC) phase-to-phase is up to 690 V at 50-60Hz, with a minimum current of 0.5 A and a maximum current of 6 A.

Schneider Electric LR97D015B is a 3-pole electronic overcurrent relay designed for direct connection to a contactor with outgoing cables and control circuits connected via screw-clamp. It features protection functions including electronic overcurrent relay, locked rotor mechanical jamming, overload with Imax greater than Isetting, and sensitivity to phase failure. The rated current range is 0.3-1.5 A, with protection settings for thermal overload adjustable between 0.3-1.5A, a D-time knob setting range of 0.5-30s, and an O-time knob setting range of 0.3-10s. It includes 1 Normally Open (NO) and 1 Normally Closed (NC) auxiliary contacts. The supply voltage is 24 V AC/DC, with a rated voltage for phase-to-phase connections at 690 V AC (50-60Hz). The minimum current capability is 0.3 A, and the maximum current capability is 1.5 A.