JRS1D series thermal overload relayDetailed product description：

Scope of application
JRS1D series thermal overload relay is used in circuits with AC 50Hz (or 60Hz), rated insulation voltage of 660V, and rated current of 0.1A~93A, as overload and phase failure protection for electric motors. And it can form a starter with the corresponding AC contactor.

Structural features
The thermal relay has a novel and beautiful design, with functions such as phase failure protection, temperature compensation, adjustable setting current, automatic and manual reset options, action indication signals, etc. The product has normally closed and normally open auxiliary contact insulation separation, small installation area, diverse installation methods, and has testing and stop buttons. It can perform flexibility checks and has a protective cover to prevent finger electric shock, ensuring safe use.

Model and meaning


Main technical parameters
1. The technical parameters of the main circuit are shown in Table 1

Table 1 Technical Parameters of Main Circuit



2. The basic parameters of auxiliary contacts are shown in Table 2
Table 2 Basic parameters of auxiliary contacts



3. The operating characteristics of the thermal relay are shown in Table 3 and Table 4 (+20 ℃)
Table 3 Action characteristics during load balancing of each phase


Table 4 Action characteristics when the load of each phase is unbalanced (disconnected)


Appearance and installation dimensions
The external dimensions of the thermal relay are shown in Figures 1-3


Wiring diagram


Figure 4 Schematic diagram of wiring when the load is an electric motor
Ordering Instructions
When placing an order, the model, name, rated current level, setting current range of the thermal element, installation method, and order quantity of the thermal relay should be specified. For example, 20 JRS1D-36/Z type thermal relays with a set current of 7-10A.