Thirteen two-car sets were built by Kawasaki Heavy Industries and Tokyu Car, and delivered to Niigata Depot in March 1995 and November 1996 for use on Echigo Line, Hakushin Line, and Uetsu Main Line local services. They entered service on 8 May 1995. The sets can be operated as up to six-car formations, and can be used on wanmandriver only operation services. From 14 March 2015, ten E127-0 series sets were transferred to the ownership of the third-sector railway operating company Echigo Tokimeki Railway for use on the newly named Myoko Haneuma Line, and reclassified as ET127 series. Set V3 was withdrawn in October 2014, leaving just two sets, V12 and V13, in the ownership of JR East. These two sets are used mainly on Yahiko Line and Echigo Line services.
Formation
, two two-car sets, V12 and V13, are in operation, based at niigata Depot, formed as shown below, with one motored "Mc" car and one non-powered trailer "Tc" car.
Designation
Mc
Tc'
Numbering
KuMoHa E127-x
KuHa E126-x
Weight
33.5
28.5
Capacity
140
138
The KuMoHa E127 car has one PS30 cross-arm type pantograph.
The KuHa E126 car has a toilet and wheelchair space.
E127-100 series
Twelve two-car sets were built by Kawasaki Heavy Industries, JR East, and Tokyu Car, and delivered to Matsumoto Depot in November and December 1998 for use on Ōito Line and Shinonoi Line local services. They entered service on 8 December 1998. The external styling differs from the earlier E127-0 series, resembling the 701 series design. Sets A7 to A12 have a second de-icing pantograph on the KuHa trailer car.
Formation
, twelve two-car sets, A1 to A12, are in operation, based at Matsumoto Depot, and formed as shown below, with one motored "Mc" car and one non-powered trailer "Tc" car, and car 1 at the Matsumoto end.
Car No.
1
2
Designation
Mc
Tc'
Numbering
KuMoHa E127-1xx
KuHa E126-1xx
Car 1 has one PS34 single-arm pantograph.
Car 2 has a toilet and wheelchair space.
Interior
ET127 series
From 14 March 2015, ten former JR East E127-0 series sets were transferred to the ownership of the third-sector railway operating company Echigo Tokimeki Railway for use on the newly named Myoko Haneuma Line, and reclassified as ET127 series.
Formation
, ten ET127 series two-car trainsets are operated by Echigo Tokimeki Railway, numbered V1 to V10, and based at Naoetsu Depot, formed as shown below, with one motored "Mc" car and one non-powered trailer "Tc" car.
Designation
Mc
Tc'
Numbering
ET127-x
ET126-x
Weight
33.5
28.5
Capacity
140
138
The ET127 car has one cross-arm type pantograph.
Build histories
The build histories of individual sets are as follows
