GRT High-Temperature Connectors, up to +500 °C
−55 to +500 °C · stainless steel · hermetic receptacles
High-Temperature Connectors
Circular connectors for hot zones — up to +500 °C — and thermocouple connectors with compensating-alloy contacts.
Standard connectors lose insulation and contact force above about 200 °C. Near engines, exhausts, furnaces and test rigs you need glass or ceramic insulation, stainless-steel shells and contacts that keep their spring at temperature.
Our GRT connectors run up to +500 °C, PRG up to +400 °C, and J599 Series III MT versions up to +260 °C. For temperature measurement, PPH25M connectors use chromel, alumel and nickel-copper contacts so thermocouple signals pass through without extra error.
Compare series
| Series | Temperature | Contacts | Current rating | Shell |
|---|---|---|---|---|
| GRT | −55 to +500 °C | 2 to 5 | 7.5–13 A | Stainless steel |
| PRG | −60 to +400 °C | 2 to 47 | 7–10 A (25 / 50 A version) | Threaded, shells 20–60 |
| PPH25M | −60 to +200 °C | 4 to 47 | — | Threaded, M24 to M64 |
PRG High-Temperature Circular Connectors, up to +400 °C
Up to +400 °C · 2 to 47 contacts · shielded or unshielded
PPH25M Thermocouple Connectors with Compensating Contacts
Chromel / alumel contacts · 4 to 47 contacts · −60 to +200 °C
How to choose
Maximum temperature
Up to 260 °C: J599 Series III MT. Up to 400 °C: PRG. Up to 500 °C: GRT.
Thermocouple circuits
Use PPH25M with contacts matched to your thermocouple type.
Sealing
GRT hermetic receptacles for sealed equipment at high temperature.
Contacts and current
From 7 A signal contacts to 50 A power contacts (PRG higher-current version).
Options beyond the standard connector
38999-type to 260 °C
J599 Series III MT stainless-steel versions.
Hermetic connectors
Glass-sealed receptacles up to +200 °C.
Frequently asked questions
Can you design a connector for my temperature?
Yes. Tell us the temperature, time at temperature, contacts and interface; GRT connectors in particular are designed to order.
From sample to production
Send your requirement
Part number, drawing, pin-out or a short description of your application.
Configuration and quote
Our engineers match the configuration and reply with a drawing and quotation.
Samples
Samples are made to your order. Third-party testing to your specification is available on request.
Your approval
You test the samples in your own equipment and approve them.
Series production
Production follows the approved sample configuration.
Need a quote or a drawing?
Send your part number, pin-out or drawing. An engineer will reply by email.